For citations:

Kompantseva E.I., Trang N.T., Gazaryan V.A. Filial rings on direct sums and direct products of torsion-free abelian groups. Chebyshevskii Sbornik. 2021;22(1):200-212. (In Russ.) https://doi.org/10.22405/2226-8383-2021-22-1-200-212