TY - JOUR AU - N. Vavilov TI - Commutators of congruence subgroups in the arithmetic case JO - Zapiski Nauchnykh Seminarov POMI PY - 2019 SP - 5 EP - 22 VL - 479 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_2019_479_a0/ LA - en ID - ZNSL_2019_479_a0 ER -