For citations:

Molchanov V.A., Khvorostukhina E.V. On problem of abstract definability of universal hypergraphic automata by input symbol semigroup. Chebyshevskii Sbornik. 2019;20(2):259-272. (In Russ.) https://doi.org/10.22405/2226-8383-2019-20-2-259-272