TY - JOUR AU - P. A. Mishnaevskii TI - Investigation of a second-order elliptic operator in domains with an infinite boundary by means of the operator Sturm--Liouville equation.~II JO - Differencialʹnye uravneniâ PY - 1983 SP - 645 EP - 653 VL - 19 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_4_a12/ LA - ru ID - DE_1983_19_4_a12 ER -