@article{1183503693,
author = {Bell, P. O.},
title = {A characterization of the group of homographic transformations},
journal = {Bull. Amer. Math. Soc.},
volume = {47},
number = {11},
year = {1941},
pages = { 488-493},
language = {en},
url = {http://dml.mathdoc.fr/item/1183503693}
}
Bell, P. O. A characterization of the group of homographic transformations. Bull. Amer. Math. Soc., Tome 47 (1941) no. 11, pp. 488-493. http://gdmltest.u-ga.fr/item/1183503693/