TY  - BOOK
AU  - Tychonov, A.,
AU  - Samarski, A.
TI  - Partial differential equations of mathematical physics /
T2  - Holden-Day series in mathematical physics
U1  - 530:51 
PY  - 1964///
CY  - San Francisco
PB  - Holden-Day
KW  - FISICA MATEMATICA
ER  -