@article{SM_1969_9_3_a7,
     author = {Yu. R. Vainberg},
     title = {Algebraic varieties over fields with differentiation},
     journal = {Sbornik. Mathematics},
     pages = {389--413},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {1969},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1969_9_3_a7/}
}