H.-J. Backe, „The Aesthetics of Non-Euclidean Game Spaces: Multistability and Object Permanence in "Antichamber" and ‚P.T.‘“, in Game | World | Architectonics: Transdisciplinary Approaches on Structures and Mechanics, Levels and Spaces, Aesthetics and Perception, M. Bonner, Hrsg. Heidelberg: Heidelberg University Publishing, 2021, S. 153–167. doi: 10.17885/heiup.752.c10385.