TY  - BOOK
AU  - Lavrentʹev,M.A.
TI  - Variational methods, for boundary value problems, for systems of elliptic equations.
U1  -  515.35 22
PY  - 1963///]
CY  - Groningen
PB  - Noordhoff
KW  - Calculus of variations
KW  - Conformal mapping
KW  - Boundary value problems
KW  - Fluid dynamics
ER  -