TY - JOUR AU - A. M. Savchuk AU - I. V. Sadovnichaya TI - On the existence of an operator group generated by the one-dimensional Dirac system JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 2019 SP - 275 EP - 294 VL - 80 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_2019_80_2_a8/ LA - ru ID - MMO_2019_80_2_a8 ER -