TY  - JOUR
AU  - O. Ya. Savchenko
TI  - Two-sided estimates for the eigenvalues of the Dirac equation and its analogues
JO  - Differencialʹnye uravneniâ
PY  - 1993
SP  - 2190
EP  - 2192
VL  - 29
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1993_29_12_a16/
LA  - ru
ID  - DE_1993_29_12_a16
ER  -