TY  - BOOK
AU  - Keyfitz, Barbara Lee., ed.
AU  - Shearer, Michael., ed.
TI  - Nonlinear evolution equations that change type /ed. (by) Barbara Lee Keyfitz, Michael Shearer
T2  - IMA volumes in mathematics & its applications
SN  - 0387973532
U1  - 515.353 
PY  - 1990///
CY  - New York
PB  - S-V
ER  -