1. A. D. Yashunskii “On Read-Once Transformations of Random Variables over Finite Fields,” Diskr. Matem. 27 (3), 145 (2015) [Discrete Math. and Appl. 25 (5), 311 (2015)].
2. V. D. Belousov, Fundamentals of the Theory of Quasigroups and Loops (Nauka, Moscow, 1967) [in Russian].
3. R. Rado, “An Inequality,” J. London Math. Soc. 27, 1 (1952).
4. V. A. Emelichev, M. M. Kovalev, and M. K. Kravtsov, Polyhedra, Graphs, and Optimization (Combinatorial Theory of Polyhedra) (Nauka, Moscow, 1981) [in Russian].
5. M. Hall, “An Existence Theorem for Latin Squares,” Bull. Amer. Math. Soc. 51 (6), 387 (1945).