Voir la notice de l'article provenant de la source The Polish Digital Mathematics Library
@misc{WM_1901_5_1-2-3_a12, title = {Zadania}, journal = {Wiadomo\'sci Matematyczne}, pages = {139}, publisher = {mathdoc}, volume = {5}, number = {1-2-3}, year = {1901}, language = {pl}, url = {http://geodesic.mathdoc.fr/item/WM_1901_5_1-2-3_a12/} }
Zadania. Wiadomości Matematyczne, Tome 5 (1901) no. 1-2-3, p. 139. http://geodesic.mathdoc.fr/item/WM_1901_5_1-2-3_a12/