TY - JOUR AU - I. V. Bezmenov TI - Transfer of Sommerfeld's radiation conditions to an artificial boundary of a domain, based on a variational principle JO - Sbornik. Mathematics PY - 1995 SP - 261 EP - 279 VL - 81 IS - 2 UR - http://geodesic.mathdoc.fr/item/SM_1995_81_2_a0/ LA - en ID - SM_1995_81_2_a0 ER -