TY  - DATA
AU  - Filippov, V. M.
TI  - Variational principles for nonpotential operators 
T2  - Translations of Mathematical Monographs, 
SN  - 9781470444914 (online)
PY  - 1989///
CY  - Providence, R.I.
PB  - American Mathematical Society
KW  - Differential equations, Partial
KW  - Nonlinear operators
KW  - Variational principles
N1  - Title on verso t.p.: Variatsionnye printsipy dlia nepotentsialnykh operatorov.;Translation of: Variatsionnye printsipy dlia nepotentsialnykh operatorov; Bibliography: p. 215-239
UR  - https://doi.org/10.1090/mmono/077
ER  -