@article{UZKU_2012_154_2_a10,
     author = {I. Sh. Kalimullin and M. Kh. Faizrakhmanov},
     title = {Limitwise monotonic spectra of $\Sigma^0_2$-sets},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {107--116},
     year = {2012},
     volume = {154},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2012_154_2_a10/}
}