@article{EMJ_2021_12_2_a5,
     author = {N. D. Markhabatov and S. V. Sudoplatov},
     title = {Ranks for families of all theories of given languages},
     journal = {Eurasian mathematical journal},
     pages = {52--58},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2021_12_2_a5/}
}