TY - JOUR AU - L. D. Kudryavtsev TI - Traces of functions of several variables, and direction fields that are regular at infinity for the Laplace operator JO - Informatics and Automation PY - 1971 SP - 256 EP - 270 VL - 112 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1971_112_a16/ LA - ru ID - TRSPY_1971_112_a16 ER -