TY - JOUR AU - S. G. Basalaev TI - Parametrizations of level surfaces of real-valued mappings of Carnot groups JO - Matematičeskie trudy PY - 2012 SP - 3 EP - 29 VL - 15 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MT_2012_15_2_a0/ LA - ru ID - MT_2012_15_2_a0 ER -