@article{DAN_1973_210_2_a8,
     author = {V. S. Shevyakov},
     title = {Formulas of the restricted predicate calculus which distinguish certain classes of models with simply computable predicates},
     journal = {Doklady Akademii Nauk},
     pages = {285--287},
     publisher = {mathdoc},
     volume = {210},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_2_a8/}
}