TY  - DATA
AU  - J. L. Lions
TI  - Perturbations Singulieres dans les Problemes aux Limites et en Controle Optimal
T2  - Lecture Notes in Mathematics
SN  - 9783540400097
PY  - 1973///
CY  - Heidelberg
PB  - Springer Berlin
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/BFb0060528
ER  -