TY  - JOUR
AU  - V. N. Tulovskii
TI  - Asymptotic distribution of eigenvalues of differential equations
JO  - Sbornik. Mathematics
PY  - 1972
SP  - 191
EP  - 207
VL  - 18
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1972_18_2_a2/
LA  - en
ID  - SM_1972_18_2_a2
ER  -