TY  - JOUR
AU  - V. A. Marchenko
TI  - Some questions of the theory of one-dimensional linear differential operators of the second order.~II
JO  - Trudy Moskovskogo matematičeskogo obŝestva
PY  - 1953
SP  - 3
EP  - 83
VL  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MMO_1953_2_a0/
LA  - ru
ID  - MMO_1953_2_a0
ER  -