TY  - BOOK
AU  - Sommerfeld, Arnold
AU  - Straus, Ernst G.
TI  - Partial differential equation in physics; lectures on the theoretical physics; v. 6
T2  - Pure and Applied Mathematics
U1  - 515.35 
PY  - 1967///
CY  - New York
PB  - Academic Press
N1  - "Lectures on Theoretical Physics, v. 6". "Translated by Ernst G. Straus"
ER  -