@article{DAN_1988_302_3_a3,
     author = {M. I. Kanovich},
     title = {Constructibility of the logic of computational problems},
     journal = {Doklady Akademii Nauk},
     pages = {530--535},
     publisher = {mathdoc},
     volume = {302},
     number = {3},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_302_3_a3/}
}