Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_1998__6_3_a5, author = {Ku\v{r}ina, Franti\v{s}ek}, title = {Dal\v{s}{\'\i}ch p\v{e}t \'uloh od {Kletta}}, journal = {U\v{c}itel matematiky}, pages = {162--165}, publisher = {mathdoc}, volume = {06}, number = {3}, year = {1998}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_1998__6_3_a5/} }
Kuřina, František. Dalších pět úloh od Kletta. Učitel matematiky, Tome 06 (1998) no. 3, pp. 162-165. http://geodesic.mathdoc.fr/item/UM_1998__6_3_a5/