@article{GDZPPN002196824,
title = {On the representations of GL(2). I. E-factors and n-closeness.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {316},
year = {1980},
pages = {27-42},
zbl = {0411.20023},
url = {http://dml.mathdoc.fr/item/GDZPPN002196824}
}
Li, Wen-Ch'ing Winnie. On the representations of GL(2). I. E-factors and n-closeness.. Journal für die reine und angewandte Mathematik, Tome 316 (1980) pp. 27-42. http://gdmltest.u-ga.fr/item/GDZPPN002196824/