Elementary geometry in hyperbolic space.
Fenchel, Werner.
Elementary geometry in hyperbolic space. by Werner Fenchel. - Berlin Walter De Gruyter 1989 - xi, 225p. - de Gruyter studies in mathematics 11 .
0899254934
516.9 / N89
Elementary geometry in hyperbolic space. by Werner Fenchel. - Berlin Walter De Gruyter 1989 - xi, 225p. - de Gruyter studies in mathematics 11 .
0899254934
516.9 / N89