@article{GDZPPN002098962,
title = {On the Congruence Subgroups Problem: Determination of the "Metaplectic Kernel".},
journal = {Inventiones mathematicae},
volume = {74},
year = {1983},
pages = {21-42},
zbl = {0517.20021},
url = {http://dml.mathdoc.fr/item/GDZPPN002098962}
}
Prasad, Gopal; Raghunathan, M.S. On the Congruence Subgroups Problem: Determination of the "Metaplectic Kernel".. Inventiones mathematicae, Tome 74 (1983) pp. 21-42. http://gdmltest.u-ga.fr/item/GDZPPN002098962/