TY  - BOOK
AU  - Lippmann, Horst,
ED  - International Centre for Mechanical Sciences
TI  - Extremum and variational principles in mechanics
T2  - International centre for mechanical sciences. courses and lectures
AV  - QA805 L54
PY  - 1972///
CY  - Berlin
PB  - Springer Verlag
KW  - Mecánica
ER  -