Intuitive combinatorial topology /

Autor Boltjanskij, Vladimir Grigor‘jevič, 1925-2019, Jefremovič, Vadim Arsen'jevič, 1903-1989
Vydáno 2001

A simple non-euclidean geometry and its physical basis : an elementary account of Galilean geometry and the Galilean principle of relativity /

Autor Jaglom, Isaak Moisejevič, 1921-1988
Vydáno 1979