TY  - DATA
AU  - Bernard Dacorogna
TI  - Direct Methods in the Calculus of Variations
SN  - 9783642514401
PY  - 1989///
PB  - Springer Berlin Heidelberg
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/978-3-642-51440-1
ER  -