Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1986_288_1_a0, author = {V. A. Vardanyan}, title = {Arithmetic complexity of provability predicate logics and their}, journal = {Doklady Akademii Nauk}, pages = {11--14}, publisher = {mathdoc}, volume = {288}, number = {1}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1986_288_1_a0/} }
V. A. Vardanyan. Arithmetic complexity of provability predicate logics and their. Doklady Akademii Nauk, Tome 288 (1986) no. 1, pp. 11-14. http://geodesic.mathdoc.fr/item/DAN_1986_288_1_a0/