TY  - BOOK
AU  - Karsnov M. L. 
AU  - Makarenko,  G. I. 
AU  - Kiselev, A. I. 
AU  - Yankovsky George
TI  - Problems and exercises in the calculus of variations
U1  - 515.1 
PY  - 1975///
CY  - Moscow
PB  - MIR Publisher , 
N1  - Includes index
ER  -