TY - JOUR AU - S. N. Mishin TI - Generalization of the Lagrange Method to the Case of Second-Order Linear Differential Equations with Constant Operator Coefficients in Locally Convex Spaces JO - Matematičeskie zametki PY - 2018 SP - 75 EP - 91 VL - 103 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2018_103_1_a6/ LA - ru ID - MZM_2018_103_1_a6 ER -