@article{DAN_1961_139_4_a7,
     author = {A. I. Mal'tsev},
     title = {Effective inseparability of a set of identically true formulae from a set of finitely refutable ones in some elementary theories},
     journal = {Doklady Akademii Nauk},
     pages = {802--805},
     publisher = {mathdoc},
     volume = {139},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a7/}
}