Andrey V. Litavrin, “On the bipolar classification of endomorphisms of a groupoid”, Zhurn. SFU. Ser. Matem. i fiz., 17:3 (2024), 378–387
A. V. Litavrin, T. V. Moiseenkova, “About one groupoid associated with the composition of multilayer feedforward neural networks”, Zhurnal SVMO, 26:2 (2024), 111–122
Andrey V. Litavrin, “On anti-endomorphisms of groupoids”, Izvestiya Irkutskogo gosudarstvennogo universiteta. Seriya Matematika, 44 (2023), 82–97
A. V. Litavrin, “On an Element-by-Element Description of the Monoid of all Endomorphisms of an Arbitrary Groupoid and One Classification of Endomorphisms of a Groupoid”, Proc. Steklov Inst. Math. (Suppl.), 321, suppl. 1 (2023), S170–S185