@article{IIGUM_2021_36_a7,
     author = {In. I. Pavlyuk and S. V. Sudoplatov},
     title = {Formulas and properties for families of theories of {Abelian} groups},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {95--109},
     publisher = {mathdoc},
     volume = {36},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2021_36_a7/}
}