Voir la notice de l'article provenant de la source The Polish Digital Mathematics Library
@misc{WM_1897_1_1_a1, title = {J. {Bertrand} o {Wro\'nskim}}, journal = {Wiadomo\'sci Matematyczne}, pages = {23--26}, publisher = {mathdoc}, volume = {1}, number = {1}, year = {1897}, language = {pl}, url = {http://geodesic.mathdoc.fr/item/WM_1897_1_1_a1/} }
J. Bertrand o Wrońskim. Wiadomości Matematyczne, Tome 1 (1897) no. 1, pp. 23-26. http://geodesic.mathdoc.fr/item/WM_1897_1_1_a1/