TY - JOUR AU - V. A. Vassiliev TI - Braid group cohomologies and algorithm complexity JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1988 SP - 15 EP - 24 VL - 22 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1988_22_3_a1/ LA - ru ID - FAA_1988_22_3_a1 ER -