Voir la notice de l'article provenant de la source The Polish Digital Mathematics Library
@misc{WM_1908_12_Dodatek_1_a2, title = {Pewnik i postulat}, journal = {Wiadomo\'sci Matematyczne}, pages = {21--30}, publisher = {mathdoc}, volume = {12}, number = {Dodatek_1}, year = {1908}, language = {pl}, url = {http://geodesic.mathdoc.fr/item/WM_1908_12_Dodatek_1_a2/} }
Pewnik i postulat. Wiadomości Matematyczne, Tome 12 (1908) no. Dodatek_1, pp. 21-30. http://geodesic.mathdoc.fr/item/WM_1908_12_Dodatek_1_a2/