Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1975_14_5_a2, author = {G. T. Kozlov and A. I. Kokorin}, title = {Proof of a lemma on model completeness}, journal = {Algebra i logika}, pages = {533--535}, publisher = {mathdoc}, volume = {14}, number = {5}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1975_14_5_a2/} }
G. T. Kozlov; A. I. Kokorin. Proof of a lemma on model completeness. Algebra i logika, Tome 14 (1975) no. 5, pp. 533-535. http://geodesic.mathdoc.fr/item/AL_1975_14_5_a2/