Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_2004__12_3_a7, author = {Zelinka, Bohdan}, title = {Troj{\'\i} po\v{c}ty a dvoj{\'\i} v\v{e}da}, journal = {U\v{c}itel matematiky}, pages = {189--191}, publisher = {mathdoc}, volume = {12}, number = {3}, year = {2004}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_2004__12_3_a7/} }
Zelinka, Bohdan. Trojí počty a dvojí věda. Učitel matematiky, Tome 12 (2004) no. 3, pp. 189-191. http://geodesic.mathdoc.fr/item/UM_2004__12_3_a7/