@article{BNYMS_1891__1_186486,
     author = {Maxime B\^ocher},
     title = {Collineation as a {Mode} of {Motion.}},
     journal = {Bulletin of the New York Mathematical Society},
     pages = {225--231},
     publisher = {mathdoc},
     volume = {1},
     year = {1891},
     url = {http://geodesic.mathdoc.fr/item/BNYMS_1891__1_186486/}
}