TY  - BOOK
AU  - Courant, Richard
TI  - Dirichlet's principle, conformal mapping and minimal surfaces
U1  - 515.9 
PY  - 1977///
CY  - New York
PB  - Springer-Verlag
N1  - "It expresses the balance and tension between the individuality of mathematical objects and the generality of mathematical methods"
ER  -