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 |