Integral representation of solutions of first-order linear partial differential equations, I
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 3 (1976) no. 1, pp. 1-35. 
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     title = {Integral representation of solutions of first-order linear partial differential equations, {I}},
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Treves, François. Integral representation of solutions of first-order linear partial differential equations, I. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 3 (1976) no. 1, pp. 1-35. http://www.numdam.org/item/ASNSP_1976_4_3_1_1_0/

[1] R. Beals - Ch. Fefferman, On local solvability of linear partial differential equations, Ann. of Math., 97 (1973), 482-498. | MR | Zbl

[2] R. Hermann, - The Differential Geometry of Foliations, II. Jr. of Math. and Mech., 2 (1972), 303-315. | MR | Zbl

[3] J.N. Mather, Proceedings of Liverpool Singularities, Symposium 1, Lecture Notes in Mathematics 192, Springer-Verlag.

[4] L. Nirenberg - F. Treves, Solvability of a linear first order partial differential equation, Comm. Pure Appl. Math., 16 (1963), 331-351. | MR | Zbl

[5] L. Nirenberg - F. Treves, On local solvability of linear partial differential equations. Part II: Sufficient conditions, Comm. Pure Appl. Math., 924 (1971), 279-288. | MR | Zbl

[6] F. Treves, Solutions of Cauchy problems modulo flat functions, Sémin. Equat. Dér. Part. Ecole Polytechnique Paris (1974-75). | Numdam | MR | Zbl

[7] F. Treves, Solutions élémentaires d'équations linéaires aux dérivées partielles du premier ordre, Sémin. Equat. Dér. Part. Ecole Polytechnique Paris (1974-75).