TY  - BOOK
AU  - Egorov, Yu V., ed
AU  - Shubin, M A
TI  - Partial differential equations II: Elements of the modern theory equations with constant coefficients
T2  - Encyclopaedia of mathematical sciences
SN  - 3540520015
U1  - 515.353 
PY  - 1994///
CY  - Berlin
PB  - Springer
ER  -