Cartan Subalgebras of Leibniz $n$-Algebras
  The present paper is devoted to the investigation of properties of Cartan subalgebras and regular elements in Leibniz $n$-algebras. The relationship between Cartan subalgebras and regular elements of given Leibniz $n$-algebra and Cartan subalgebras and regular elements of the corresponding factor $n$-Lie algebra is established. 
S. Albeverio, Sh. A. Ayupov, B. A. Omirov and R. M. Turdibaev