TY  - BOOK
AU  - Tychonov, A.N.
AU  - Samarski, A.A.
AU  - Radding, S., tr.
TI  - Partial differential equations of matheamtical physics - V.1
U1  - 515.35302453 
PY  - 1964///
CY  - San Francisco
PB  - Holden-Day, Inc.
ER  -