By David Rowe, Philippe Nabonnand, Rossana Tazzioli
Also appears in collection : SHM - Les géométries non euclidiennes
By David Aubin
By Étienne Ghys
By Claude Sabbah , Laurence Broze
By Laurent Mazliak
By Valérie Beaudouin
By Marie-Françoise Roy , Sylvie Paycha , Claude Sabbah , Gautami Bhowmik