TY  - GEN
AU  - Courant, R
AU  - Hilbert, D.
TI  - Mathematical methods for physics: vol. 1
SN  - 9780471504399 (pbk. : alk. paper)
PY  - 2004///
CY  - Weinheim: 
PB  - Wiley- VCH, 
ER  -