TY  - JOUR
AU  - V. A. Marchenko
TI  - Some questions of the theory of one-dimensional linear differential operators of the second order.~I
JO  - Trudy Moskovskogo matematičeskogo obŝestva
PY  - 1952
SP  - 327
EP  - 420
VL  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MMO_1952_1_a6/
LA  - ru
ID  - MMO_1952_1_a6
ER  -