The integration of specification aspects in database design. - Rolf A. de By (Universiteit Enschede, 1991)

Typed Sets as a Basis for Object-Oriented Database Schemas. - Herman Balsters; Rolf A. de By; Roberto V. Zicari (ECOOP, 1993)

A Multi-Set Extended Relational Algebra - A Formal Approach to a Practical Issue. - Paul W. P. J. Grefen; Rolf A. de By (ICDE, 1994)

A Database Interface for Complex Objects. - Marcel Holsheimer; Rolf A. de By; Hassan Aït-Kaci (ICLP, 1994)

From Nested-Loop to Join Queries in OODB. - Hennie J. Steenhagen; Peter M. G. Apers; Henk M. Blanken; Rolf A. de By (VLDB, 1994)

Integrity Control in Advanced Database Systems. - Paul W. P. J. Grefen; Rolf A. de By; Peter M. G. Apers (IEEE Data Eng. Bull., 1994)

A Framework for Representation, Validation and Implementation of Databases Application Semantics. - Maurice van Keulen; Jacek Skowronek; Peter M. G. Apers; Herman Balsters; Henk M. Blanken; Rolf A. de By; Jan Flokstra (DS-6, 1995)

Functionally Specified Distributed Transactions in Co-operative Scenarios. - Rolf A. de By; Susan J. Even; Peter A. C. Verkoulen (RIDE-DOM, 1995)

Translating OSQL-Queries into Efficient Set Expressions. - Hennie J. Steenhagen; Rolf A. de By; Henk M. Blanken (EDBT, 1996)

Language Features for Cooperation in an Object-Oriented Database Environment. - Susan J. Even; Frans J. Faase; Rolf A. de By (Int. J. Cooperative Inf. Syst., 1996)

Integrating Organisational and Transactional Aspects of Cooperative Activities. - Frans J. Faase; Susan J. Even; Rolf A. de By; Peter M. G. Apers (DBPL, 1997)

Aggregation and comparison of trajectories. - Nirvana Meratnia; Rolf A. de By (ACM-GIS, 2002)

Trajectory representation in location-based services: problems & solution. - Nirvana Meratnia; Rolf A. de By (WISE Workshops, 2003)

Storing and Handling Vague Spatial Objects. - Arta Dilo; Pawalai Kraipeerapun; Wim H. Bakker; Rolf A. de By (DEXA Workshops, 2004)

Spatiotemporal Compression Techniques for Moving Point Objects. - Nirvana Meratnia; Rolf A. de By (EDBT, 2004)

Integrating Semantic and Syntactic Descriptions to Chain Geographic Services. - Rob Lemmens; Andreas Wytzisk; Rolf A. de By; Carlos Granell; Michael Gould; Peter van Oosterom (IEEE Internet Comput., 2006)

Metrics for Vague Spatial Objects Based on the Concept of Mass. - Arta Dilo; Rolf A. de By; Alfred Stein (FUZZ-IEEE, 2007)

A system of types and operators for handling vague spatial objects. - Arta Dilo; Rolf A. de By; Alfred Stein (Int. J. Geogr. Inf. Sci., 2007)

Enhancing Geo-Service Chaining through Deep Service Descriptions. - Rob Lemmens; Rolf A. de By; Michael Gould; Andreas Wytzisk; Carlos Granell; Peter van Oosterom (Trans. GIS, 2007)

A skeleton design theory for spatial data infrastructure. - Rolf A. de By; Rob Lemmens; Javier Morales (Earth Sci. Informatics, 2009)

Models for professional cyclic activities in VGI with a case in coffee farming. - Clarisse Kagoyire; Rolf A. de By (GEOCROWD, 2012)

Models for half-direction based part-whole relationships. - Gaurav Singh; Rolf A. de By (IWGS@SIGSPATIAL/GIS, 2012)

Concepts, Compass and Computation: Models for Directional Part-Whole Relationships. - Gaurav Singh; Rolf A. de By; Ivana Ivánová (ICCSA (2), 2012)

Towards geosocial recommender systems. - Victor de Graaff; Maurice van Keulen; Rolf A. de By (WI&C, 2012)

Point of interest to region of interest conversion. - Victor de Graaff; Rolf A. de By; Maurice van Keulen; Jan Flokstra (SIGSPATIAL/GIS, 2013)

Digital earth applications in the twenty-first century. - Rolf A. de By; Yola Georgiadou (Int. J. Digit. Earth, 2014)

Cyber-applications as gateway to data-rich Digital Earth systems. - Javier Morales; Rolf A. de By (Int. J. Digit. Earth, 2014)

A geo-information system approach for forest fire likelihood based on causative and anti-causative factors. - Sanjay K. Srivastava; Sameer Saran; Rolf A. de By; V. K. Dadhwal (Int. J. Geogr. Inf. Sci., 2014)

Generic knowledge-based Analysis of Social Media for Recommendations. - Victor de Graaff; Anne van de Venis; Maurice van Keulen; Rolf A. de By (CBRecSys@RecSys, 2015)

Spatiotemporal Behavior Profiling: A Treasure Hunt Case Study. - Victor de Graaff; Dieter Pfoser; Maurice van Keulen; Rolf A. de By (W2GIS, 2015)

Spatial Extent Models for Natural Language Phrases Involving Directional Containment. - Gaurav Singh; Rolf A. de By (Trans. GIS, 2015)

Automated semantic trajectory annotation with indoor point-of-interest visits in urban areas. - Victor de Graaff; Rolf A. de By; Maurice van Keulen (SAC, 2016)

Spatiotemporal Information Extraction from a Historic Expedition Gazetteer. - Mafkereseb Kassahun Bekele; Rolf A. de By; Gaurav Singh (ISPRS Int. J. Geo Inf., 2016)

On the use of guided regularized random forests to identify crops in smallholder farm fields. - Emma Izquierdo-Verdiguier; Raúl Zurita-Milla; Rolf A. de By (MultiTemp, 2017)

Identifying crops in smallholder farms using time series of WorldView-2 images. - Raúl Zurita-Milla; Emma Izquierdo-Verdiguier; Rolf A. de By (MultiTemp, 2017)

A Workflow for Automated Satellite Image Processing: from Raw VHSR Data to Object-Based Spectral Information for Smallholder Agriculture. - Dimitris Stratoulias; Valentyn A. Tolpekin; Rolf A. de By; Raúl Zurita-Milla; Vasilios Retsios; Wietske Bijker; Mohammad Alfi Hasan; Eric F. Vermote (Remote. Sens., 2017)

A Cloud-Based Multi-Temporal Ensemble Classifier to Map Smallholder Farming Systems. - Rosa Aguilar; Raúl Zurita-Milla; Emma Izquierdo-Verdiguier; Rolf A. de By (Remote. Sens., 2018)

Enabling collaborative GeoVisual analytics: Systems, techniques, and research challenges. - Gustavo Adolfo García-Chapeton; Frank O. Ostermann; Rolf A. de By; Menno-Jan Kraak (Trans. GIS, 2018)

Towards Automated Delineation of Smallholder Farm Fields From VHR Images Using Convolutional Networks. - Claudio Persello; Valentyn A. Tolpekin; John Ray Bergado; Rolf A. de By (IGARSS, 2019)

Location Privacy in the Wake of the GDPR. - Yola Georgiadou; Rolf A. de By; Ourania Kounadi (ISPRS Int. J. Geo Inf., 2019)

Combining favorability modeling with collaborative geo-visual analysis to improve agricultural pest management. - Gustavo Adolfo García-Chapeton; Albertus G. Toxopeus; Jesús Olivero; Frank O. Ostermann; Rolf A. de By (Trans. GIS, 2021)

Utilization of Internet of Things and Wireless Sensor Networks for Sustainable Smallholder Agriculture. - Amsale Zelalem Bayih; Javier Morales; Yaregal Assabie; Rolf A. de By (Sensors, 2022)