TY - JOUR AU - A. M. Vershik TI - Numerical invariants of exponential groups and locally free approximation of the braid group JO - Zapiski Nauchnykh Seminarov POMI PY - 2000 SP - 51 EP - 63 VL - 266 UR - http://geodesic.mathdoc.fr/item/ZNSL_2000_266_a4/ LA - ru ID - ZNSL_2000_266_a4 ER -