TY - JOUR AU - Yu. V. Gandel' TI - Boundary-value problems for the Helmholtz equation and their discrete mathematical models JO - Contemporary Mathematics. Fundamental Directions PY - 2010 SP - 36 EP - 49 VL - 36 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2010_36_a3/ LA - ru ID - CMFD_2010_36_a3 ER -