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Lacunas for hyperbolic differential operators with constant coefficients. I. (Russian) Zbl 0208.13201

MSC:
35E20 General theory of PDEs and systems of PDEs with constant coefficients
58J45 Hyperbolic equations on manifolds
35A20 Analyticity in context of PDEs
35L25 Higher-order hyperbolic equations
Citations:
Zbl 0191.11203
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