@article{AL_1988_27_1_a3,
     author = {V. A. Rudnev},
     title = {On the existence of an inseparable pair in the recursion},
     journal = {Algebra i logika},
     pages = {48--56},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1988_27_1_a3/}
}