The congruence subgroup problem
2004 ◽
Vol 114
(4)
◽
pp. 299-308
◽
1989 ◽
Vol 1989
(402)
◽
pp. 138-152
Keyword(s):
1982 ◽
pp. 197-207
◽
Keyword(s):
Keyword(s):
1967 ◽
Vol 33
(1)
◽
pp. 59-137
◽