Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1967_174_2_a11, author = {V. A. Yankov}, title = {Finite validity of formulas of special form}, journal = {Doklady Akademii Nauk}, pages = {302--304}, publisher = {mathdoc}, volume = {174}, number = {2}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_2_a11/} }
V. A. Yankov. Finite validity of formulas of special form. Doklady Akademii Nauk, Tome 174 (1967) no. 2, pp. 302-304. http://geodesic.mathdoc.fr/item/DAN_1967_174_2_a11/