TY - JOUR AU - M. R. Timerbaev TI - An approximation by finite elements of the eigenvalue problem for degenerate differential operator JO - Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki PY - 2005 SP - 157 EP - 165 VL - 147 IS - 3 UR - http://geodesic.mathdoc.fr/item/UZKU_2005_147_3_a10/ LA - ru ID - UZKU_2005_147_3_a10 ER -