@article{1077465884,
author = {Rosen, David},
title = {A class of continued fractions associated with certain
properly discontinuous groups},
journal = {Duke Math. J.},
volume = {21},
number = {1},
year = {1954},
pages = { 549-563},
language = {en},
url = {http://dml.mathdoc.fr/item/1077465884}
}
Rosen, David. A class of continued fractions associated with certain
properly discontinuous groups. Duke Math. J., Tome 21 (1954) no. 1, pp. 549-563. http://gdmltest.u-ga.fr/item/1077465884/