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The initial value problem for operators which can be factorized into a product of Klein-Gordon operators. (English) Zbl 0242.35052

Conf. Theory ordinary partial diff. Equ., Dundee/Scotland 1972, Lect. Notes Math. 280, 227-231 (1972).

MSC:

35L30 Initial value problems for higher-order hyperbolic equations
35C99 Representations of solutions to partial differential equations