Question 1. Does Élie Cartan's paper Les groupes réels simples, finis et continus, Ann. Sci. École Norm. Sup. (3) 31 (1914), 263–355 contain a classification of $\Bbb C$-linear involutions of simple complex Lie algebras?
Question 2. If not, what kind of a similar/related classification does it contain?
Question 3. In what book/paper is this Cartan's paper discussed?
MathSciNet contains only the title, while zbMATH contains a review: a translation into German of a few lines from the introduction.