Yeshkeyev, A.R., Kassymetova, M.T., & Ulbrikht, O.I. (2018). Criterion for the cosemanticness of the Abelian groups in the enriched signature. Bulletin of the Karaganda University. Mathematics Series, 1(89), 49–60. https://doi.org/10.31489/2018m1/49-60