TY  - BOOK
AU  - Rektorys,Karel
TI  - Variational methods in mathematics, science, and engineering
SN  - 9027704880
PY  - 1977///
CY  - Boston
PB  - D. Reidel Publishing Company
KW  - Calculus of variations
KW  - Hilbert space
KW  - Differential equations
KW  - Numerical solutions
KW  - Boundray value problems
ER  -