Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_1997__5_1_a9, author = {Kup\v{c}\'akov\'a, Marie}, title = {Tajemn\'e kruhov\'e \'ukazy o\v{c}ima geometra}, journal = {U\v{c}itel matematiky}, pages = {41--46}, publisher = {mathdoc}, volume = {05}, number = {1}, year = {1997}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_1997__5_1_a9/} }
Kupčáková, Marie. Tajemné kruhové úkazy očima geometra. Učitel matematiky, Tome 05 (1997) no. 1, pp. 41-46. http://geodesic.mathdoc.fr/item/UM_1997__5_1_a9/