Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_223_3_a15, author = {S. F. Soprunov}, title = {Initial segments of nonstandard arithmetics}, journal = {Doklady Akademii Nauk}, pages = {576--577}, publisher = {mathdoc}, volume = {223}, number = {3}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_223_3_a15/} }
S. F. Soprunov. Initial segments of nonstandard arithmetics. Doklady Akademii Nauk, Tome 223 (1975) no. 3, pp. 576-577. http://geodesic.mathdoc.fr/item/DAN_1975_223_3_a15/