TY - JOUR AU - G. V. Alekseev AU - E. G. Komarov TI - The non-self-conjugate singular spectral problem for a Helmholtz operator with discontinuous coefficients JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1992 SP - 587 EP - 597 VL - 32 IS - 4 UR - http://geodesic.mathdoc.fr/item/ZVMMF_1992_32_4_a7/ LA - ru ID - ZVMMF_1992_32_4_a7 ER -