TY - JOUR AU - T. D. Ventcel' TI - A free boundary problem for the heat equation JO - Doklady Akademii Nauk PY - 1960 SP - 1000 EP - 1003 VL - 131 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1960_131_5_a2/ LA - ru ID - DAN_1960_131_5_a2 ER -