Spatial Reasoning about Relative Orientation and Distance for Robot Exploration. - Reinhard Moratz; Jan Oliver Wallgrün (COSIT, 2003)

Propagation of distance and orientation intervals. - Reinhard Moratz; Jan Oliver Wallgrün (IROS, 2003)

Autonomous Construction of Hierarchical Voronoi-Based Route Graph Representations. - Jan Oliver Wallgrün (Spatial Cognition, 2004)

On Generalizing Orientation Information in OPRAm. - Frank Dylla; Jan Oliver Wallgrün (KI, 2006)

Qualitative Spatial Representation and Reasoning in the SparQ-Toolbox. - Jan Oliver Wallgrün; Lutz Frommberger; Diedrich Wolter; Frank Dylla; Christian Freksa (Spatial Cognition, 2006)

Qualitative Spatial Reasoning for Rule Compliant Agent Navigation. - Diedrich Wolter; Frank Dylla; Lutz Frommberger; Jan Oliver Wallgrün; Bernhard Nebel; Stefan Wölfl 001 (FLAIRS, 2007)

Qualitative Spatial Reasoning with Conceptual Neighborhoods for Agent Control. - Frank Dylla; Jan Oliver Wallgrün (J. Intell. Robotic Syst., 2007)

SailAway: Spatial Cognition in Sea Navigation. - Diedrich Wolter; Frank Dylla; Stefan Wölfl 001; Jan Oliver Wallgrün; Lutz Frommberger; Bernhard Nebel; Christian Freksa (Künstliche Intell., 2008)

Multi-Hypothesis Topological Mapping Using Qualitative Spatial Reasoning. - Jan Oliver Wallgrün (AAAI Spring Symposium: Benchmarking of Qualitative Spatial and Temporal Reasoning Systems, 2009)

A Qualitative Approach to Localization and Navigation Based on Visibility Information. - Paolo Fogliaroni; Jan Oliver Wallgrün; Eliseo Clementini; Francesco Tarquini; Diedrich Wolter (COSIT, 2009)

Exploiting Qualitative Spatial Constraints for Multi-hypothesis Topological Map Learning. - Jan Oliver Wallgrün (COSIT, 2009)

Matching Annotated Generalized Voronoi Graphs for Autonomous Robot Localization and Mapping. - Jan Oliver Wallgrün (ISVD, 2009)

Hierarchical Voronoi Graphs - Spatial Representation and Reasoning for Mobile Robots. - Jan Oliver Wallgrün (Springer, 2010)

Qualitative matching of spatial information. - Jan Oliver Wallgrün; Diedrich Wolter; Kai-Florian Richter (GIS, 2010)

Qualitative Spatial Reasoning for Topological Map Learning. - Jan Oliver Wallgrün (Spatial Cogn. Comput., 2010)

Voronoi Graph Matching for Robot Localization and Mapping. - Jan Oliver Wallgrün (Trans. Comput. Sci., 2010)

A Hybrid Geometric-Qualitative Spatial Reasoning System and Its Application in GIS. - Giorgio De Felice; Paolo Fogliaroni; Jan Oliver Wallgrün (COSIT, 2011)

Managing Qualitative Spatial Information to Support Query-by-Sketch. - Paolo Fogliaroni; Giorgio De Felice; Falko Schmid; Jan Oliver Wallgrün (Understanding and Processing Sketch Maps @ COSIT, 2011)

Using SparQ for Matching Sketch Maps. - Diedrich Wolter; Kai-Florian Richter; Jan Oliver Wallgrün (Understanding and Processing Sketch Maps @ COSIT, 2011)

Data Capture. - Michael Cramer; Wolfgang Kresse; Jan Skaloud; Norbert Haala; Silvia Nittel; Jan Oliver Wallgrün (Springer Handbook of Geographic Information, 2012)

Exploiting qualitative spatial reasoning for topological adjustment of spatial data. - Jan Oliver Wallgrün (SIGSPATIAL/GIS, 2012)

Investigations into the Cognitive Conceptualization and Similarity Assessment of Spatial Scenes. - Jan Oliver Wallgrün; Jinlong Yang 004; Alexander Klippel; Frank Dylla (GIScience, 2012)

Assessing Similarities of Qualitative Spatio-temporal Relations. - Alexander Klippel; Jinlong Yang 004; Jan Oliver Wallgrün; Frank Dylla; Rui Li 023 (Spatial Cognition, 2012)

Formally grounding spatio-temporal thinking. - Alexander Klippel; Jan Oliver Wallgrün; Jinlong Yang 004; Rui Li 023; Frank Dylla (Cogn. Process., 2012)

Spatial reasoning with augmented points: Extending cardinal directions with local distances. - Reinhard Moratz; Jan Oliver Wallgrün (J. Spatial Inf. Sci., 2012)

Investigating intuitive granularities of overlap relations. - Jan Oliver Wallgrün; Jinlong Yang 004; Alexander Klippel (ICCI*CC, 2013)

Fundamental Cognitive Concepts of Space (and Time): Using Cross-Linguistic, Crowdsourced Data to Cognitively Calibrate Modes of Overlap. - Alexander Klippel; Jan Oliver Wallgrün; Jinlong Yang 004; Jennifer Smith Mason; Eun-Kyeong Kim; David M. Mark (COSIT, 2013)

GeoTxt: a web API to leverage place references in text. - Morteza Karimzadeh; Wenyi Huang; Siddhartha Banerjee; Jan Oliver Wallgrün; Frank Hardisty; Scott Pezanowski; Prasenjit Mitra; Alan M. MacEachren (GIR, 2013)

Construction and first analysis of a corpus for the evaluation and training of microblog/twitter geoparsers. - Jan Oliver Wallgrün; Frank Hardisty; Alan M. MacEachren; Morteza Karimzadeh; Yiting Ju; Scott Pezanowski (GIR, 2014)

Building a corpus of spatial relational expressions extracted from web documents. - Jan Oliver Wallgrün; Alexander Klippel; Timothy Baldwin (GIR, 2014)

Boundaries and Prototypes in Categorizing Direction. - Vivien Mast; Diedrich Wolter; Alexander Klippel; Jan Oliver Wallgrün; Thora Tenbrink (Spatial Cognition, 2014)

Cognitive Evaluation of Spatial Formalisms: Intuitive Granularities of Overlap Relations. - Jan Oliver Wallgrün; Jinlong Yang 004; Alexander Klippel (Int. J. Cogn. Informatics Nat. Intell., 2014)

Geospatial Narratives and Their Spatio-Temporal Dynamics: Commonsense Reasoning for High-Level Analyses in Geographic Information Systems. - Mehul Bhatt; Jan Oliver Wallgrün (ISPRS Int. J. Geo Inf., 2014)

Conceptualizing Landscap - A Comparative Study of Landscape Categories with Navajo and English-Speaking Participants. - Alexander Klippel; David M. Mark; Jan Oliver Wallgrün; David Stea (COSIT, 2015)

Citizen Science Land Cover Classification Based on Ground and Aerial Imagery. - Kevin A. Sparks; Alexander Klippel; Jan Oliver Wallgrün; David M. Mark (COSIT, 2015)

Towards contextualized models of spatial relations. - Jan Oliver Wallgrün; Alexander Klippel; Morteza Karimzadeh (GIR, 2015)

Immersive Analytics for Multi-objective Dynamic Integrated Climate-Economy (DICE) Models. - Mark B. Simpson; Jan Oliver Wallgrün; Alexander Klippel; Liping Yang; Gregory Garner; Klaus Keller; Danielle Oprean; Saurabh Bansal (ISS Companion, 2016)

Developing and Evaluating VR Field Trips. - Danielle Oprean; Jan Oliver Wallgrün; Jose Manuel Pinto Duarte; Debora Verniz; Jiayan Zhao; Alexander Klippel (COSIT (Workshops/Posters), 2017)

Immersive Technologies and Experiences for Archaeological Site Exploration and Analysis. - Jan Oliver Wallgrün; Jiawei Huang 004; Jiayan Zhao; Claire Ebert; Paul Roddy; Jaime J. Awe; Tim Murtha; Alexander Klippel (COSIT (Workshops/Posters), 2017)

iVR for the geosciences. - Jiayan Zhao; Peter C. LaFemina; Jan Oliver Wallgrün; Danielle Oprean; Alexander Klippel (KELVAR@VR, 2017)

Quantifying space, understanding minds: A visual summary approach. - Mark B. Simpson; Kai-Florian Richter; Jan Oliver Wallgrün; Alexander Klippel (J. Spatial Inf. Sci., 2017)

GeoCorpora: building a corpus to test and train microblog geoparsers. - Jan Oliver Wallgrün; Morteza Karimzadeh; Alan M. MacEachren; Scott Pezanowski (Int. J. Geogr. Inf. Sci., 2018)

For the Many, Not the One: Designing Low-Cost Joint VR Experiences for Place-Based Learning. - Jan Oliver Wallgrün; Jack Shen-Kuen Chang; Jiayan Zhao; Pejman Sajjadi; Danielle Oprean; Thomas B. Murphy; Jennifer Baka; Alexander Klippel (EuroVR, 2019)

Immersive Learning in the Wild: A Progress Report. - Alexander Klippel; Danielle Oprean; Jiayan Zhao; Jan Oliver Wallgrün; Peter C. LaFemina; Kathy L. Jackson; Elise Gowen (iLRN, 2019)

Warping Space and Time-Reviving Educational Tools of the 19th Century. - Alexander Klippel; Jan Oliver Wallgrün; Arif Masrur; Jiayan Zhao; Peter C. LaFemina (VR, 2019)

Research Framework for Immersive Virtual Field Trips. - Alexander Klippel; Jiayan Zhao; Danielle Oprean; Jan Oliver Wallgrün; Jack Shen-Kuen Chang (VR, 2019)

Low-Cost VR Applications to Experience Real Word Places Anytime, Anywhere, and with Anyone. - Jan Oliver Wallgrün; Arif Masrur; Jiayan Zhao; Alan Taylor; Eric Knapp; Jack Shen-Kuen Chang; Alexander Klippel (WEVR@VR, 2019)

Where are we now? Re-visiting the Digital Earth through human-centered virtual and augmented reality geovisualization environments. - Arzu Çöltekin; Danielle Oprean; Jan Oliver Wallgrün; Alexander Klippel (Int. J. Digit. Earth, 2019)

Harnessing the power of immersive virtual reality - visualization and analysis of 3D earth science data sets. - Jiayan Zhao; Jan Oliver Wallgrün; Peter C. LaFemina; Jim Normandeau; Alexander Klippel (Geo spatial Inf. Sci., 2019)

GeoTxt: A scalable geoparsing system for unstructured text geolocation. - Morteza Karimzadeh; Scott Pezanowski; Alan M. MacEachren; Jan Oliver Wallgrün (Trans. GIS, 2019)

Mixed or Virtual: Does Device Type Matter in Human-ECA Interactions. - Pejman Sajjadi; Mahda M. Bagher; Jan Oliver Wallgrün; Stefan Kopp; Philipp Cimiano; Alexander Klippel (iLRN, 2020)

The Effect of Virtual Agent Gender and Embodiment on the Experiences and Performance of Students in Virtual Field Trips. - Pejman Sajjadi; Jiayan Zhao; Jan Oliver Wallgrün; Tanya Furman; Peter C. LaFemina; Alex Fatemi; Zachary E. Zidik; Alexander Klippel (TALE, 2020)

Immersive Place-based Learning - An Extended Research Framework. - Alexander Klippel; Jiayan Zhao; Pejman Sajjadi; Jan Oliver Wallgrün; Mahda M. Bagher; Danielle Oprean (VR Workshops, 2020)

A Comparison of Visual Attention Guiding Approaches for 360° Image-Based VR Tours. - Jan Oliver Wallgrün; Mahda M. Bagher; Pejman Sajjadi; Alexander Klippel (VR, 2020)

Learning in the Field: Comparison of Desktop, Immersive Virtual Reality, and Actual Field Trips for Place-Based STEM Education. - Jiayan Zhao; Peter C. LaFemina; Julia Carr; Pejman Sajjadi; Jan Oliver Wallgrün; Alexander Klippel (VR, 2020)

Extended Realities - How Changing Scale Affects Spatial Learning. - Jiayan Zhao; Mark B. Simpson; Jan Oliver Wallgrün; Pejman Sajjadi; Alexander Klippel (VR Workshops, 2020)

The value of being there: toward a science of immersive virtual field trips. - Alexander Klippel; Jiayan Zhao; Danielle Oprean; Jan Oliver Wallgrün; Chris Stubbs; Peter La Femina; Kathy L. Jackson (Virtual Real., 2020)

Influence of HMD Type and Spatial Ability on Experiences and Learning in Place-based Education. - Pejman Sajjadi; Jiayan Zhao; Jan Oliver Wallgrün; Peter La Femina; Alexander Klippel (iLRN, 2021)

Place-Based Learning Through a Proxy - Variations in the Perceived Benefits of a Virtual Tour. - Jan Oliver Wallgrün; Eric Knapp; Alan Taylor; Alexander Klippel; Jiayan Zhao; Pejman Sajjadi (iLRN, 2021)

CrowdXR - Pitfalls and Potentials of Experiments with Remote Participants. - Jiayan Zhao; Mark B. Simpson; Pejman Sajjadi; Jan Oliver Wallgrün; Ping Li 026; Mahda M. Bagher; Danielle Oprean; Lace M. K. Padilla; Alexander Klippel (ISMAR, 2021)

Fostering Geological Thinking Through Virtual Strike and Dip Measurements. - Natalie Bursztyn; Hannah Riegel; Pejman Sajjadi; Bart Masters; Jiayan Zhao; Jiawei Huang 004; Mahda M. Bagher; Jan Oliver Wallgrün; Alexander Klippel (VR Workshops, 2021)

HMD Type and Spatial Ability: Effects on the Experiences and Learning of Students in Immersive Virtual Field Trips. - Pejman Sajjadi; Jiayan Zhao; Jan Oliver Wallgrün; Peter C. LaFemina; Alexander Klippel (VR Workshops, 2021)

Move The Object or Move The User: The Role of Interaction Techniques on Embodied Learning in VR. - Mahda M. Bagher; Pejman Sajjadi; Jan Oliver Wallgrün; Peter La Femina; Alexander Klippel (Frontiers Virtual Real., 2021)

AnywhereXR - Laying the Foundation for Open Source Embodied Digital Twin Applications. - Alexander Klippel; Bart Knuiman; Jiayan Zhao; Jan Oliver Wallgrün; Sebastian Garzon (IMET, 2023)

Experiencing the future: Evaluating a new framework for the participatory co-design of healthy public spaces using immersive virtual reality. - Gamze Dane; Suzan Evers; Pauline van den Berg; Alexander Klippel; Timon Verduijn; Jan Oliver Wallgrün; Theo A. Arentze (Comput. Environ. Urban Syst., 2024)

V-CURRENTS: Virtual Collaborative Underwater Realities for Engagement and Novel Teaching Spaces. - Alexander Klippel; Jeroen Hubert; Jan Oliver Wallgrün; Joseph Henry; Thomas Bruhn; Timon Verduijn; Tinka Murk (VR Workshops, 2025)

Optimizing Velocity Thresholds for Fixation Detection in Virtual Reality Using the I-VT Algorithm. - Jiayan Zhao; Ate Jepma; Jan Oliver Wallgrün; Alexander Klippel (VR Workshops, 2025)

AnywhereXR: On-the-fly 3D Environments as a Basis for Open Source Immersive Digital Twin Applications. - Alexander Klippel; Bart Knuiman; Jiayan Zhao; Jan Oliver Wallgrün; Jascha Grübel (CoRR, 2025)