1. V. D. Belousov, n-ary Quasigroups (Shtiintsa, Kishinev, 1972) [in Russian].
2. S. A. Rusakov, Algebraic N-ary Groups. Sylow Theory of n-ary Groups (Nauka i Tekhnika, Minsk, 1992) [in Russian].
3. J. Ušan, “n-groups in the light of the neutral operations,” Math. Morav. (2003).
4. A. Marini and V. Shcherbacov, “On autotopies and automorphisms of n-ary linear quasigroups,” Algebra DiscreteMath., No. 2, 59–83 (2004).
5. M. M. Glukhov, “On varieties of (i, j)-reducible n-quasigroups,” in Nets and Quasigroups (Shtiintsa, Kishinev, 1976), Vol. 39, pp. 67–72 [in Russian].