TY  - BOOK
AU  - Landis,E.M
TI  - Second order equations of elliptic & parabolic type
T2  - Translations of mathematical monographs 171
SN  - 9780821808573
U1  - 10.03+10.04 
PY  - 1998///
CY  - Providence
PB  - American Mathematical Society
ER  -