TY  - BOOK
AU  - Egorov,YuV.
AU  - Egorov,YuV.
AU  - Shubin,M.A.
TI  - Partial differential equations V.6
T2  - Encyclopaedia of mathematical science
PY  - 1994///
CY  - Berlin, New York
PB  - Springer
KW  - Differential equations, Partial
ER  -