Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1970_4_a6, author = {V. T. Kulik}, title = {Sentences preserved under homomorphisms that are one-to-one at zero}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {56--63}, publisher = {mathdoc}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1970_4_a6/} }
V. T. Kulik. Sentences preserved under homomorphisms that are one-to-one at zero. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1970), pp. 56-63. http://geodesic.mathdoc.fr/item/IVM_1970_4_a6/