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Propagation des singularités pour des problèmes aux limites. (French) Zbl 0426.35100

Sémin. Bourbaki, 31e année, 1978/79, Exp. No. 525, Lect. Notes Math. 770, 1-20 (1980).

MSC:

35S05 Pseudodifferential operators as generalizations of partial differential operators
35F05 Linear first-order PDEs
35G05 Linear higher-order PDEs