@article{DAN_1986_290_6_a0,
     author = {S. N. Artemov},
     title = {Numerically correct logics of provability},
     journal = {Doklady Akademii Nauk},
     pages = {1289--1292},
     publisher = {mathdoc},
     volume = {290},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_290_6_a0/}
}