@article{GDZPPN002445417, title = {The multiplier-series of a Schottky group.}, journal = {Mathematische Zeitschrift}, volume = {221}, year = {1996}, pages = {465-478}, zbl = {0869.30036}, url = {http://dml.mathdoc.fr/item/GDZPPN002445417} }
Büser, J. The multiplier-series of a Schottky group.. Mathematische Zeitschrift, Tome 221 (1996) pp. 465-478. http://gdmltest.u-ga.fr/item/GDZPPN002445417/