TY - JOUR AU - E. M. Russakovskii TI - Operator treatment of boundary problems with spectral parameters entering via polynomials in the boundary conditions JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1975 SP - 91 EP - 92 VL - 9 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1975_9_4_a23/ LA - ru ID - FAA_1975_9_4_a23 ER -