TY  - BOOK
AU  - Landis, E.
TI  - Second Order Equations of Elliptic and Parabolic Type
SN  - 0821808575
PY  - 1971///
CY  - Rhode Island
PB  - American Mathematical Society
KW  - Differential Equations, Elliptic
KW  - Differential Equations, Parabolic
ER  -