@article{AL_1975_14_3_a5,
     author = {M. Yu. Trofimov},
     title = {Definability in algebraically closed systems},
     journal = {Algebra i logika},
     pages = {320--327},
     year = {1975},
     volume = {14},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1975_14_3_a5/}
}