Spatiotemporal = Spatial X Temporal. - Yunpiao Bai; Michael Gruninger (JOWO, 2022)

An Ontology for Event Location. - Yunpiao Bai; Michael Grüninger (FOIS, 2023)

A Spatiotemporal Ontology for Semantic Trajectories (extended abstract). - Yunpiao Bai; Michael Grüninger (JOWO, 2023)

An Ontological Analysis of Robot Path Planning Problems. - Yunpiao Bai; Jona Thai; Michael Grüninger (RobOntics@RO-MAN, 2023)