@article{DAN_1970_191_4_a0,
     author = {V. I. Amstislavskii},
     title = {The decomposition of a field of sets that are obtained by an $R$-operation over recursive sets},
     journal = {Doklady Akademii Nauk},
     pages = {743--746},
     publisher = {mathdoc},
     volume = {191},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_191_4_a0/}
}