MSP algorithm: multi-robot patrolling based on territory allocation using balanced graph partitioning. - David Portugal; Rui P. Rocha (SAC, 2010)

A study of genetic algorithms for approximating the longest path in generic graphs. - David Portugal; Carlos Henggeler Antunes; Rui P. Rocha (SMC, 2010)

A Survey on Multi-robot Patrolling Algorithms. - David Portugal; Rui P. Rocha (DoCEIS, 2011)

TraxBot - Assembling and Programming of a Mobile Robotic Platform. - André G. Araújo; David Portugal; Micael S. Couceiro; Carlos M. Figueiredo; Rui P. Rocha (ICAART (2), 2012)

Extracting Topological Information from Grid Maps for Robot Navigation. - David Portugal; Rui P. Rocha (ICAART (1), 2012)

Retrieving Topological Information for Mobile Robots Provided with Grid Maps. - David Portugal; Rui P. Rocha (ICAART (Revised Selected Papers), 2012)

Measuring Variables Effect to Statistically Model the Multi-Robot Patrolling Problem by Means of ANOVA. - David Portugal; Rui P. Rocha (DoCEIS, 2012)

Initial deployment of a robotic team - a hierarchical approach under communication constraints verified on low-cost platforms. - Micael S. Couceiro; Carlos M. Figueiredo; David Portugal; Rui P. Rocha; Nuno M. F. Ferreira (IROS, 2012)

Decision methods for distributed multi-robot patrol. - David Portugal; Rui P. Rocha (SSRR, 2012)

Scalable, fault-tolerant and distributed multi-robot patrol in real world environments. - David Portugal; Rui P. Rocha (IROS, 2013)

A collective robotic architecture in search and rescue scenarios. - Micael S. Couceiro; David Portugal; Rui P. Rocha (SAC, 2013)

Applying Bayesian learning to multi-robot patrol. - David Portugal; Micael S. Couceiro; Rui P. Rocha (SSRR, 2013)

The CHOPIN project: Cooperation between human and rObotic teams in catastrophic incidents. - Rui P. Rocha; David Portugal; Micael S. Couceiro; Filipe Araújo; Paulo Menezes 001; Jorge Lobo 002 (SSRR, 2013)

An evaluation of 2D SLAM techniques available in Robot Operating System. - João Machado Santos; David Portugal; Rui P. Rocha (SSRR, 2013)

Multi-robot patrolling algorithms: examining performance and scalability. - David Portugal; Rui P. Rocha (Adv. Robotics, 2013)

A methodology for detection and estimation in the analysis of golf putting. - Micael S. Couceiro; David Portugal; Nuno Gonçalves 001; Rui P. Rocha; J. Miguel A. Luz; Carlos M. Figueiredo; Gonçalo Dias (Pattern Anal. Appl., 2013)

Distributed multi-robot patrol: A scalable and fault-tolerant framework. - David Portugal; Rui P. Rocha (Robotics Auton. Syst., 2013)

Cooperative Multi-robot Patrol in an Indoor Infrastructure. - David Portugal; Rui P. Rocha (Human Behavior Understanding in Networked Sensing, 2014)

Fusing sonars and LRF data to perform SLAM in reduced visibility scenarios. - João Machado Santos; Micael S. Couceiro; David Portugal; Rui P. Rocha (ICARSC, 2014)

A Comparison of General-Purpose FOSS Compression Techniques for Efficient Communication in Cooperative Multi-Robot Tasks. - Gonçalo S. Martins; David Portugal; Rui P. Rocha (ICINCO (2), 2014)

On the Usage of General-Purpose Compression Techniques for the Optimization of Inter-robot Communication. - Gonçalo S. Martins; David Portugal; Rui P. Rocha (ICINCO (Selected Papers), 2014)

Real-time People Detection and Mapping System for a Mobile Robot using a RGB-D Sensor. - Francisco F. Sales; David Portugal; Rui P. Rocha (ICINCO (2), 2014)

Speeding up rao-blackwellized particle filter SLAM with a multithreaded architecture. - Bruno D. Gouveia; David Portugal; Lino Marques (IROS, 2014)

Finding optimal routes for multi-robot patrolling in generic graphs. - David Portugal; Charles Pippin; Rui P. Rocha; Henrik I. Christensen (IROS, 2014)

2014 Humanitarian Robotics and Automation Technology Challenge [Humanitarian Technology]. - Raj Madhavan 001; Lino Marques; Edson Prestes; Prithviraj Dasgupta; Gonçalo Cabrita; David Portugal; Bruno D. Gouveia; Vitor A. M. Jorge; Renan Maffei; Guilherme Schvarcz Franco; José García (IEEE Robotics Autom. Mag., 2014)

Marsupial teams of robots: deployment of miniature robots for swarm exploration under communication constraints. - Micael S. Couceiro; David Portugal; Rui P. Rocha; Nuno M. F. Ferreira (Robotica, 2014)

CogniMouse: On Detecting Users' Task Completion Difficulty through Computer Mouse Interaction. - Marios Belk; David Portugal; Eleni Christodoulou; George Samaras (CHI Extended Abstracts, 2015)

CogniWin - A Virtual Assistance System for Older Adults at Work. - Sten Hanke; Hugo Meinedo; David Portugal; Marios Belk; João Quintas; Eleni Christodoulou; Miroslav Sili; Miguel Sales Dias; George Samaras (HCI (26), 2015)

SocialRobot: An interactive mobile robot for elderly home care. - David Portugal; Luís Santos 001; Paulo Alvito; Jorge Dias 001; George Samaras; Eleni Christodoulou (SII, 2015)

Ad hoc communication in teams of mobile robots using zigbee technology. - Amadeu Fernandes; Micael S. Couceiro; David Portugal; João Machado Santos; Rui P. Rocha (Comput. Appl. Eng. Educ., 2015)

Integrating Arduino-Based Educational Mobile Robots in ROS. - André G. Araújo; David Portugal; Micael S. Couceiro; Rui P. Rocha (J. Intell. Robotic Syst., 2015)

A Sensor Fusion Layer to Cope with Reduced Visibility in SLAM. - João Machado Santos; Micael S. Couceiro; David Portugal; Rui P. Rocha (J. Intell. Robotic Syst., 2015)

Computation Sharing in Distributed Robotic Systems: A Case Study on SLAM. - Bruno D. Gouveia; David Portugal; Daniel Castro Silva; Lino Marques (IEEE Trans Autom. Sci. Eng., 2015)

A Distributed and Multithreaded SLAM Architecture for Robotic Clusters and Wireless Sensor Networks. - David Portugal; Bruno D. Gouveia; Lino Marques (Advances in Social Media Analysis, 2015)

Identification of an Individual's Frustration in the Work Environment Through a Multi-sensor Computer Mouse. - David Portugal; Marios Belk; João Quintas; Eleni Christodoulou; George Samaras (HCI (25), 2016)

A Computer Mouse for Stress Identification of Older Adults at Work. - Marios Belk; David Portugal; Panagiotis Germanakos; João Quintas; Eleni Christodoulou; George Samaras (UMAP (Extended Proceedings), 2016)

CogniWin: An Integrated Framework to Support Older Adults at Work. - David Portugal; Miguel Sales Dias; Eleni Christodoulou; Marios Belk; João Quintas; Pedro Nunes; George Samaras; Sten Hanke; Markus Müllner-Rieder; Christoph Glauser; Mehdi Snene; Dimitri Konstantas (UMAP (Extended Proceedings), 2016)

Cooperative multi-robot patrol with Bayesian learning. - David Portugal; Rui P. Rocha (Auton. Robots, 2016)

The role of security in human-robot shared environments: A case study in ROS-based surveillance robots. - David Portugal; Samuel Pereira; Micael S. Couceiro (RO-MAN, 2017)

On 3D simulators for multi-robot systems in ROS: MORSE or Gazebo? - Farzan Majeed Noori; David Portugal; Rui P. Rocha; Micael S. Couceiro (SSRR, 2017)

Performance Estimation and Dimensioning of Team Size for Multirobot Patrol. - David Portugal; Rui P. Rocha (IEEE Intell. Syst., 2017)

The potential of a robotics summer course on Engineering Education. - Nuno M. Fonseca Ferreira; Micael S. Couceiro; André G. Araújo; David Portugal (TRROS@ERF, 2018)

A Versatile Visual Navigation System for Autonomous Vehicles. - Filip Majer; Lucie Halodová; Tomás Vintr; Martin Dlouhý; Lukás Merenda; Jaime Pulido Fentanes; David Portugal; Micael S. Couceiro; Tomás Krajník (MESAS, 2018)

Tailoring a ROS Educational Programming Language Architecture. - Karen Tatarian; Samuel Pereira; Micael S. Couceiro; David Portugal (RiE, 2018)

SocialRobot: Towards a Personalized Elderly Care Mobile Robot. - David Portugal; Luís Santos 001; Pedro Trindade; Christophoros Christophorou; Panayiotis Andreou; Dimosthenis Georgiadis; Marios Belk; João Freire; Paulo Alvito; George Samaras; Eleni Christodoulou; Jorge Dias 001 (CoRR, 2018)

A localization approach for autonomous underwater vehicles: A ROS-Gazebo framework. - Frederico C. Vaz; David Portugal; André G. Araújo; Micael S. Couceiro; Rui P. Rocha (CoRR, 2018)

SEMFIRE: Towards a new generation of forestry maintenance multi-robot systems. - Micael S. Couceiro; David Portugal; João Filipe Ferreira; Rui P. Rocha (SII, 2019)

A novel solution for securing robot communications based on the MQTT protocol and ROS. - Munkenyi Mukhandi; David Portugal; Samuel Pereira; Micael S. Couceiro (SII, 2019)

MoDSeM: Towards Semantic Mapping with Distributed Robots. - Gonçalo S. Martins; João Filipe Ferreira; David Portugal; Micael S. Couceiro (TAROS (2), 2019)

A Study on the Deployment of a Service Robot in an Elderly Care Center. - David Portugal; Paulo Alvito; Eleni Christodoulou; George Samaras; Jorge Dias 001 (Int. J. Soc. Robotics, 2019)

A Reliable Localization Architecture for Mobile Surveillance Robots. - David Portugal; André G. Araújo; Micael S. Couceiro (SSRR, 2020)

Requirements Specification and Integration Architecture for Perception in a Cooperative Team of Forestry Robots. - David Portugal; João Filipe Ferreira; Micael S. Couceiro (TAROS, 2020)

Privacy-preserving Biometric-driven Data for Student Identity Management: Challenges and Approaches. - Christos Fidas; Marios Belk; David Portugal; Andreas Pitsillides (UMAP (Adjunct Publication), 2021)

Fostering human-robot cooperative architectures for search and rescue missions in urban fires. - Micael S. Couceiro; David Portugal; Rui P. Rocha; André G. Araújo (Simul., 2021)

3D Traversability Analysis in Forest Environments Based on Mechanical Effort. - Afonso E. Carvalho; João Filipe Ferreira; David Portugal (IAS, 2022)

Integration of an Artificial Perception System for Identification of Live Flammable Material in Forestry Robotics. - Maria Eduarda Andrada; João F. Ferreira 002; David Portugal; Micael S. Couceiro (SII, 2022)

UWB Aided Mobile Robot Localization with Neural Networks and the EKF*. - Panagiotis T. Karfakis; Micael S. Couceiro; David Portugal; Rui Cortesão (SMC, 2022)

An IoT-based interoperable architecture for wireless biomonitoring of patients with sensor patches. - Fernanda Famá; José N. Faria; David Portugal (Internet Things, 2022)

Integration of a Smart Bed Infrastructure with Hospital Information Systems using Fast Health Interoperability Resources: *A case study of the Wireless biOmonitoring stickers and smart bed architecture: toWards Untethered Patients (WoW) R&D Project. - David Portugal; José N. Faria; Marco Domingues; Luís Gaspar (CCNC, 2023)

TRUSTID: Intelligent and Continuous Online Student Identity Management in Higher Education. - Argyris Constantinides; José N. Faria; Taoufik Sousak; Pedro Martins 004; David Portugal; Marios Belk; Andreas Pitsillides; Christos Fidas (UMAP (Adjunct Publication), 2023)

Image-based Face Verification for Student Identity Management - the TRUSTID Case Study. - José Nuno Faria; David Portugal; Pedro Martins 004; Marios Belk; Argyris Constantinides; Andreas Pitsillides; Christos Fidas (UMAP (Adjunct Publication), 2023)

3D Multi-Robot Exploration with a Two-Level Coordination Strategy and Prioritization. - Luigi Freda; Tiago Novo; David Portugal; Rui P. Rocha (CoRR, 2023)

NR5G-SAM: A SLAM Framework for Field Robot Applications Based on 5G New Radio. - Panagiotis T. Karfakis; Micael S. Couceiro; David Portugal (Sensors, 2023)

Sensing and Artificial Perception for Robots in Precision Forestry: A Survey. - João Filipe Ferreira; David Portugal; Maria Eduarda Andrada; Pedro Machado; Rui P. Rocha; Paulo Peixoto (Robotics, 2023)

A LiDAR-Camera-Inertial-GNSS Apparatus for 3D Multimodal Dataset Collection in Woodland Scenarios. - Mário P. Cristóvão; David Portugal; Afonso E. Carvalho; João Filipe Ferreira (Sensors, 2023)

Continuous user identification in distance learning: a recent technology perspective. - David Portugal; José N. Faria; Marios Belk; Pedro Martins 004; Argyris Constantinides; Anna Maria Pietron; Andreas Pitsillides; Nikolaos M. Avouris; Christos A. Fidas (Smart Learn. Environ., 2023)

3D traversability analysis and path planning based on mechanical effort for UGVs in forest environments. - Afonso E. Carvalho; João Filipe Ferreira; David Portugal (Robotics Auton. Syst., 2024)

Dimensioning payload size for fast retransmission of MQTT packets in the wake of network disconnections. - Marco Domingues; José N. Faria; David Portugal (EURASIP J. Wirel. Commun. Netw., 2024)

Deployment and validation of a smart bed architecture for untethered patients with wireless biomonitoring stickers. - Tânia Nunes; Luís Gaspar; José N. Faria; David Portugal; Telmo Lopes; Pedro Fernandes; Mahmoud Tavakoli (Medical Biol. Eng. Comput., 2024)

On terrain traversability analysis in unstructured environments: recent advances in forest applications. - Afonso E. Carvalho; David Portugal; Paulo Peixoto (Intell. Serv. Robotics, 2025)

Inquiring the robot operating system community on the state of adoption of the ROS 2 robotics middleware. - David Portugal; Rui P. Rocha; João P. Castilho (Int. J. Intell. Robotics Appl., 2025)