@article{1028998224,
author = {Erd\H os, Paul and Piranian, George},
title = {Sequences of linear fractional transformations.},
journal = {Michigan Math. J.},
volume = {6},
number = {1},
year = {1959},
pages = { 205-209},
language = {en},
url = {http://dml.mathdoc.fr/item/1028998224}
}
Erdős, Paul; Piranian, George. Sequences of linear fractional transformations.. Michigan Math. J., Tome 6 (1959) no. 1, pp. 205-209. http://gdmltest.u-ga.fr/item/1028998224/