TY  - JOUR
AU  - Ya. Ihara
TI  - On discrete subgroups of the two by two projective linear group over $\mathfrak p$-adic fields
JO  - Matematika
PY  - 1968
SP  - 98
EP  - 115
VL  - 12
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1968_12_3_a2/
LA  - ru
ID  - MAT_1968_12_3_a2
ER  -