Qualitative spatial reasoning and spatial relations
European Journal of Psychological Studies. №1 (5). 2017
https://www.elibrary.ru/item.asp?id=32498180
Tsvetkov V.Ya.
Qualitative spatial reasoning and spatial relations
https://www.elibrary.ru/item.asp?id=32498180
Tsvetkov V.Ya.
Qualitative spatial reasoning and spatial relations