Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1969_189_3_a10, author = {L. L. Tsinman}, title = {Certain algorithms in a formal arithmetic system}, journal = {Doklady Akademii Nauk}, pages = {489--490}, publisher = {mathdoc}, volume = {189}, number = {3}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_189_3_a10/} }
L. L. Tsinman. Certain algorithms in a formal arithmetic system. Doklady Akademii Nauk, Tome 189 (1969) no. 3, pp. 489-490. http://geodesic.mathdoc.fr/item/DAN_1969_189_3_a10/