Cartan, Elie Sur la théorie des systèmes en involution et ses applications à la relativité. (French) Zbl 0002.26401 Bull. Soc. Math. Fr. 59, 88-118 (1931). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 1 Document Keywords:differential equations PDF BibTeX XML Cite \textit{E. Cartan}, Bull. Soc. Math. Fr. 59, 88--118 (1931; Zbl 0002.26401) Full Text: DOI Numdam EuDML