TY  - BOOK
AU  - Moiseiwitsch,B.L.
TI  - Variational principles
SN  - 9780486438177
U1  - 530.15 
PY  - 2004///
CY  - Mineola, N.Y.
PB  - Dover Publications
KW  - Mathematical physics
KW  - Variational principles
KW  - Calculus of variations
N1  - Includes index
ER  -