Coxeter, H. S. M. Non-Euclidean geometry/ H. S. M. Coxeter. - 5th ed. - [Toronto]: University of Toronto Press, [1968]. - xv, 309p.: diagrs., - Mathematical expositions; no. 2 . Reprint of the 1965 ed. Bibliography: p. 293-300. Subjects--Topical Terms: Geometry, Non-Euclidean.Geometria Nao Euclidiana. Dewey Class. No.: 516.1 / C879n