Voir la notice de l'article provenant de la source The Polish Digital Mathematics Library
@misc{WM_1907_11_1-2-3_a8, title = {Samuel {Pierpont} {Langley}}, journal = {Wiadomo\'sci Matematyczne}, pages = {189--194}, publisher = {mathdoc}, volume = {11}, number = {1-2-3}, year = {1907}, language = {pl}, url = {http://geodesic.mathdoc.fr/item/WM_1907_11_1-2-3_a8/} }
Samuel Pierpont Langley. Wiadomości Matematyczne, Tome 11 (1907) no. 1-2-3, pp. 189-194. http://geodesic.mathdoc.fr/item/WM_1907_11_1-2-3_a8/