Hörmander, L. Existence, uniqueness and regularity of solutions of linear differential equations. (English) Zbl 0171.06802 Proc. Int. Congr. Math. 1962, 339-346 (1963). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 213 Documents Keywords:partial differential equations PDF BibTeX XML OpenURL