Klingenberg, W The triangle theorem in the riemannian geometry by W. Klingenberg - Recife Instituto de Fisica e Matematica 1964 - 21 p 24 cm - Colectia Textos de matematica Nr. 14 . Contine bibliogr. - Lucrare multigr Subjects--Topical Terms: Geometria triunghiuluiGeometrie riemannianaSuprafete convexe Dewey Class. No.: 514.112.3:514.76