Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_2005__13_2_a2, author = {L\'en\'art, Istv\'an}, title = {Projekt {\quotedblbase}srovn\'avac{\'\i} geometrie{\textquotedblright} (rovina - sf\'era - hemisf\'era) (2)}, journal = {U\v{c}itel matematiky}, pages = {75--83}, publisher = {mathdoc}, volume = {13}, number = {2}, year = {2005}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_2005__13_2_a2/} }
Lénárt, István. Projekt „srovnávací geometrie” (rovina - sféra - hemisféra) (2). Učitel matematiky, Tome 13 (2005) no. 2, pp. 75-83. http://geodesic.mathdoc.fr/item/UM_2005__13_2_a2/