@article{DAN_1971_199_2_a2,
     author = {J. M. Barzdi\c{n}\v{s}},
     title = {Complexity and accuracy of the solution of initial segments of the problem of occurrence in a recursively enumerable set},
     journal = {Doklady Akademii Nauk},
     pages = {262--264},
     publisher = {mathdoc},
     volume = {199},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_2_a2/}
}