TY  - BOOK
AU  - Lippmann, Horst
TI  - EXTERMUM AND VARIATIONAL PRINCIPLES IN MECHANICS
U1  - 620.1 
PY  - 1972///
CY  - Wien
PB  - Springer-Verlag
KW  - Mechanics, Applied
N1  - References : P. 227-238
ER  -