Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_2005__13_1_a0, author = {L\'en\'art, Istv\'an}, title = {Projekt {\quotedblbase}srovn\'avac{\'\i} geometrie‟ (rovina - sf\'era - hemisf\'era) [1]}, journal = {U\v{c}itel matematiky}, pages = {1--8}, publisher = {mathdoc}, volume = {13}, number = {1}, year = {2005}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_2005__13_1_a0/} }
Lénárt, István. Projekt „srovnávací geometrie‟ (rovina - sféra - hemisféra) [1]. Učitel matematiky, Tome 13 (2005) no. 1, pp. 1-8. http://geodesic.mathdoc.fr/item/UM_2005__13_1_a0/