Arzu Çöltekin, Ian M. Lochhead, Marguerite Madden, Sidonie Christophe, Alexandre Devaux, Christopher James Pettit, Oliver Lock, Shashwat Shukla, Lukás Herman, Zdenek Stachon, Petr Kubícek, Dajana Snopková, Sergio Bernardes, Nicholas R. Hedley: Extended Reality in Spatial Sciences: A Review of Research Challenges and Future Directions. ISPRS Int. J. Geo Inf. 9(7): 439 (2020)