Cartan, Elie La géométrie de l’intégrale \(\int F(x,y,y',y'')dx\). (French) Zbl 0014.36801 J. Math. Pures Appl., IX. Sér. 15, 42-69 (1936). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Review Keywords:Differential geometry PDF BibTeX XML Cite \textit{E. Cartan}, J. Math. Pures Appl. (9) 15, 42--69 (1936; Zbl 0014.36801)