@article{ZNSL_1972_32_a17,
     author = {R. I. Freidson},
     title = {Families of the recursive predicates of the zero measure},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {121--128},
     publisher = {mathdoc},
     volume = {32},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_32_a17/}
}