CrimsonHex: A Service Oriented Repository of Specialised Learning Objects. - José Paulo Leal; Ricardo Queirós (ICEIS, 2009)

Comparison of Internet Usage Habits in Two Generations of Higher Education Students - A Case Study. - Rosalina Babo; Carla Teixeira Lopes; Ana Cláudia Rodrigues 002; Mário Pinto 001; Ricardo Queirós; Paulo Coelho de Oliveira (CSEDU (1), 2010)

Integration of Repositories in eLearning Systems. - José Paulo Leal; Ricardo Queirós (ICEIS (1), 2010)

Modelling Text File Evaluation Processes. - José Paulo Leal; Ricardo Queirós (ICWL Workshops, 2010)

Specifying a Programming Exercises Evaluation Service on the e-Framework. - José Paulo Leal; Ricardo Queirós; Duarte Ferreira (ICWL, 2010)

Cross-Correlation and Sine-Fitting Techniques for High-Resolution Ultrasonic Ranging. - Ricardo Queirós; Francisco André Corrêa Alegria; Pedro Silva Girão; António Manuel da Cruz Serra (IEEE Trans. Instrum. Meas., 2010)

Interoperability on e-Learning 2.0: The PEACE Case Study. - Ricardo Queirós; Lino Oliveira; Cândida Silva; Mário Pinto 001 (CENTERIS (2), 2011)

Integration of ePortfolios in Learning Management Systems. - Ricardo Queirós; Lino Oliveira; José Paulo Leal; Fernando Moreira (ICCSA (5), 2011)

A Survey on eLearning Content Standardization. - Ricardo Queirós; José Paulo Leal (WSKS, 2011)

Integrating the LMS in Service Oriented eLearning Systems. - José Paulo Leal; Ricardo Queirós (Int. J. Knowl. Soc. Res., 2011)

Programming Exercises Evaluation Systems - An Interoperability Survey. - Ricardo Queirós; José Paulo Leal (CSEDU (1), 2012)

PETCHA: a programming exercises teaching assistant. - Ricardo Alexandre Peixoto de Queirós; José Paulo Leal (ITiCSE, 2012)

Computing Semantic Relatedness using DBPedia. - José Paulo Leal; Vânia Rodrigues; Ricardo Queirós (SLATE, 2012)

A distributed system for learning programming on-line. - Elena Verdú; Luisa M. Regueras; María Jesús Verdú; José Paulo Leal; Juan Pablo de Castro; Ricardo Queirós (Comput. Educ., 2012)

Orchestration of E-Learning Services for Automatic Evaluation of Programming Exercises. - Ricardo Queirós; José Paulo Leal (J. Univers. Comput. Sci., 2012)

CodeSkelGen - A Program Skeleton Generator. - Ricardo Queirós (SLATE, 2013)

Seqins - A Sequencing Tool for Educational Resources. - Ricardo Queirós; José Paulo Leal; José Campos (SLATE, 2013)

Ensemble - an E-Learning Framework. - Ricardo Queirós; José Paulo Leal (J. Univers. Comput. Sci., 2013)

crimsonHex: a learning objects repository for programming exercises. - Ricardo Queirós; José Paulo Leal (Softw. Pract. Exp., 2013)

BabeLO - An Extensible Converter of Programming Exercises Formats. - Ricardo Queirós; José Paulo Leal (IEEE Trans. Learn. Technol., 2013)

A Survey of E-learning Content Aggregation Standards. - Ricardo Queirós; José Paulo Leal (ICWL Workshops, 2014)

JSON on Mobile: is there an Efficient Parser?. - Ricardo Queirós (SLATE, 2014)

Sequencing educational resources with Seqins. - Ricardo Queirós; José Paulo Leal; José Campos (Comput. Sci. Inf. Syst., 2014)

ESEIG Mobile: An M-Learning Approach in a Superior School. - Ricardo Queirós; Mário Pinto 001 (Int. J. Knowl. Based Organ., 2014)

Odin: A Service for Gamification of Learning Activities. - José Carlos Paiva; José Paulo Leal; Ricardo Queirós (SLATE, 2015)

Learning Computer Science Languages in Enki. - José Carlos Paiva; José Paulo Leal; Ricardo Alexandre Peixoto de Queirós (ITiCSE, 2016)

Enki: A Pedagogical Services Aggregator for Learning Programming Languages. - José Carlos Paiva; José Paulo Leal; Ricardo Alexandre Peixoto de Queirós (ITiCSE, 2016)

Sni'per: a Code Snippet RESTful API. - Ricardo Queirós; Alberto Simões 001 (SLATE, 2016)

Gamification of learning activities with the Odin service. - José Carlos Paiva; José Paulo Leal; Ricardo Queirós (Comput. Sci. Inf. Syst., 2016)

A Survey on CSS Preprocessors. - Ricardo Queirós (SLATE, 2017)

SOS - Simple Orchestration of Services. - Ricardo Queirós; Alberto Simões 001 (SLATE, 2017)

Magni - A Framework for Developing Context-Aware Mobile Applications. - Ricardo Queirós; Filipe Portela; José Machado 001 (WorldCIST (3), 2017)

Authoring Game-Based Programming Challenges to Improve Students' Motivation. - José Carlos Paiva; José Paulo Leal; Ricardo Queirós (ICL (1), 2018)

Kaang: A RESTful API Generator for the Modern Web. - Ricardo Queirós (SLATE, 2018)

LearnJS - A JavaScript Learning Playground (Short Paper). - Ricardo Queirós (SLATE, 2018)

Fostering Students-Driven Learning of Computer Programming with an Ensemble of E-Learning Tools. - Ricardo Queirós; José Paulo Leal (WorldCIST (2), 2018)

CSS Preprocessing: Tools and Automation Techniques. - Ricardo Queirós (Inf., 2018)

Defining Requirements for a Gamified Programming Exercises Format. - Jakub Swacha; Ricardo Queirós; José Carlos Paiva; José Paulo Leal (KES, 2019)

Learning JavaScript in a Local Playground. - Ricardo Queirós (SLATE, 2019)

SeCoGen - A Service Code Generator. - Ricardo Queirós (SLATE, 2019)

PROud - A Gamification Framework Based on Programming Exercises Usage Data. - Ricardo Queirós (Inf., 2019)

Game-Based Coding Challenges to Foster Programming Practice. - José Carlos Paiva; José Paulo Leal; Ricardo Queirós (ICPEC, 2020)

Computer Programming Education in Portuguese Universities. - Ricardo Queirós; Mário Pinto 001; Teresa Terroso (ICPEC, 2020)

On the Nature of Programming Exercises. - Alberto Simões 001; Ricardo Queirós (ICPEC, 2020)

A Roadmap to Gamify Programming Education. - Jakub Swacha; Ricardo Queirós; José Carlos Paiva; José Paulo Leal; Sokol Kosta; Raffaele Montella (ICPEC, 2020)

FGPE AuthorKit - A Tool for Authoring Gamified Programming Educational Content. - José Carlos Paiva; Ricardo Queirós; José Paulo Leal; Jakub Swacha (ITiCSE, 2020)

Yet Another Programming Exercises Interoperability Language (Short Paper). - José Carlos Paiva; Ricardo Queirós; José Paulo Leal; Jakub Swacha (SLATE, 2020)

bOWL: A Pluggable OWL Browser (Short Paper). - Alberto Simões 001; Ricardo Queirós (SLATE, 2020)

Design of a Microservices Chaining Gamification Framework. - Ricardo Queirós (WorldCIST (3), 2020)

Fostering Programming Practice through Games. - José Carlos Paiva; José Paulo Leal; Ricardo Queirós (Inf., 2020)

GEdIL - Gamified Education Interoperability Language. - Jakub Swacha; José Carlos Paiva; José Paulo Leal; Ricardo Queirós; Raffaele Montella; Sokol Kosta (Inf., 2020)

An Open-Source Gamified Programming Learning Environment (Short Paper). - José Carlos Paiva; Ricardo Queirós; José Paulo Leal; Jakub Swacha; Filip Miernik (ICPEC, 2021)

User Experience Evaluation in a Code Playground (Short Paper). - Ricardo Queirós; Mário Pinto 001; Teresa Terroso (ICPEC, 2021)

Experiments on PR-Based Gamification (Short Paper). - Alberto Simões 001; Ricardo Queirós (ICPEC, 2021)

Mooshak's Diet Update: Introducing YAPExIL Format to Mooshak (Short Paper). - José Carlos Paiva; Ricardo Queirós; José Paulo Leal (SLATE, 2021)

Programming Exercises Interoperability: The Case of a Non-Picky Consumer. - Ricardo Queirós; José Carlos Paiva; José Paulo Leal (SLATE, 2021)

FGPE Gamification Service: A GraphQL Service to Gamify Online Education. - José Carlos Paiva; Alicja Haraszczuk; Ricardo Queirós; José Paulo Leal; Jakub Swacha; Sokol Kosta (WorldCIST (4), 2021)

The Dangers of Gamification. - Ricardo Queirós; Mário Pinto 001 (ARTIIS (1), 2022)

Integration of Computer Science Assessment into Learning Management Systems with JuezLTI. - Juan V. Carrillo; Alberto Sierra; José Paulo Leal; Ricardo Queirós; Salvador Pellicer; Marco Primo (ICPEC, 2022)

A Roadmap to Convert Educational Web Applications into LTI Tools. - José Paulo Leal; Ricardo Queirós; Pedro Ferreirinha; Jakub Swacha (ICPEC, 2022)

WebPuppet - A Tiny Automated Web UI Testing Tool. - Ricardo Queirós (ICPEC, 2022)

Poster: Students' Usability Evaluation of the FGPE Gamified Programming Learning Environment. - Jakub Swacha; Filip Miernik; Marzena Sylwia Ignasiak; Raffaele Montella; Ciro Giuseppe De Vita; Gennaro Mellone; Ricardo Queirós; José Carlos Paiva; José Paulo Leal; Sokol Kosta (ISD, 2022)

Integration of a Learning Playground into a LMS. - Ricardo Alexandre Peixoto de Queirós (ITiCSE (2), 2022)

Generation of Document Type Exercises for Automated Assessment. - José Paulo Leal; Ricardo Queirós; Marco Primo (SLATE, 2022)

ScraPE - An Automated Tool for Programming Exercises Scraping. - Ricardo Queirós (SLATE, 2022)

Managing Gamified Programming Courses with the FGPE Platform. - José Carlos Paiva; Ricardo Queirós; José Paulo Leal; Jakub Swacha; Filip Miernik (Inf., 2022)

Can a Content Management System Provide a Good User Experience to Teachers? (Short Paper). - Yannik Bauer; José Paulo Leal; Ricardo Queirós (ICPEC, 2023)

Automated Assessment of Simple Web Applications (Short Paper). - Luís Maia Costa; José Paulo Leal; Ricardo Queirós (ICPEC, 2023)

Sifu Reloaded: An Open-Source Gamified Web-Based CyberSecurity Awareness Platform (Short Paper). - José Carlos Paiva; Ricardo Queirós; Tiago Gasiba (ICPEC, 2023)

A Gamified Educational Escape Rooms' Framework for Computer Programming Classes (Short Paper). - Ricardo Queirós; Carla M. A. Pinto; Mário Cruz; Daniela Mascarenhas (ICPEC, 2023)

Integrating Gamified Educational Escape Rooms in Learning Management Systems (Short Paper). - Ricardo Queirós; Carla M. A. Pinto; Mário Cruz; Daniela Mascarenhas (SLATE, 2023)

GATUGU: Six Perspectives of Evaluation of Gamified Systems. - Jakub Swacha; Ricardo Queirós; José Carlos Paiva (Inf., 2023)

FGPE+: The Mobile FGPE Environment and the Pareto-Optimized Gamified Programming Exercise Selection Model - An Empirical Evaluation. - Rytis Maskeliunas; Robertas Damasevicius; Tomas Blazauskas; Jakub Swacha; Ricardo Queirós; José Carlos Paiva (Comput., 2023)

GAMAI, an AI-Powered Programming Exercise Gamifier Tool. - Raffaele Montella; Ciro Giuseppe De Vita; Gennaro Mellone; Tullio Ciricillo; Dario Caramiello; Diana Di Luccio; Sokol Kosta; Robertas Damasevicius; Rytis Maskeliunas; Ricardo Queirós; Jakub Swacha (AIED Companion (1), 2024)

Enhancing Gamified LMS with the Integration of Games Experiences. - Ricardo Queirós (ARTIIS Workshops (1), 2024)

FGPE - An Evolving Framework for Gamified Programming Learning. - Ricardo Queirós; Jakub Swacha; Robertas Damasevicius; Rytis Maskeliunas (ARTIIS Workshops (1), 2024)

Authoring Programming Exercises for Automated Assessment Assisted by Generative AI. - Yannik Bauer; José Paulo Leal; Ricardo Queirós (ICPEC, 2024)

Exercisify: An AI-Powered Statement Evaluator. - Ricardo Queirós (ICPEC, 2024)

Client-Side Gamification Engine for Enhanced Programming Learning. - Ricardo Queirós; Robertas Damasevicius; Rytis Maskeliunas; Jakub Swacha (ICPEC, 2024)

Designing a Multi-Narrative Gamified Learning Experience. - Yannik Bauer; José Paulo Leal; Ricardo Queirós; Jakub Swacha; José Carlos Paiva (ICPEC, 2025)

Osiris: A Multi-Language Transpiler for Educational Purposes. - Breno Marrão; José Paulo Leal; Ricardo Queirós (ICPEC, 2025)