@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/}
}