For citations:
Dobrovol’skii M.N., Dobrovol’skii N.N., Dobrovol’skii N.M., Kozhukhov I.B., Rebrova I.Yu. Monoid of products of zeta functions of monoids of natural numbers. Chebyshevskii Sbornik. 2022;23(3):102-117. (In Russ.) https://doi.org/10.22405/2226-8383-2022-23-3-102-117