TY  - BOOK
TI  - Hyperbolic equations
T2  - Pitman research notes in mathematics series,
SN  - 0470208694 (Wiley : pbk.) | 0582988918 (pbk.)
PY  - 1987///
CY  - Burnt Mill, Harlow, Essex, England : | New York
PB  - Longman Scientific & Technical ; | Wiley
N1  - English and French
ER  -