@article{TRSPY_1970_113_a3,
     author = {R. I. Freidson},
     title = {A~certain characterization of the complexity of recursive predicates},
     journal = {Informatics and Automation},
     pages = {79--101},
     publisher = {mathdoc},
     volume = {113},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1970_113_a3/}
}