@article{IVM_1989_1_a8,
     author = {T. M. Kuz'mina},
     title = {The relationship between reducibilities of index sets},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60--69},
     publisher = {mathdoc},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1989_1_a8/}
}