@article{SEMR_2019_16_a8,
     author = {N. D. Markhabatov and S. V. Sudoplatov},
     title = {Algebras for definable families of theories},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {600--608},
     publisher = {mathdoc},
     volume = {16},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2019_16_a8/}
}