@article{MT_1988_8_a7,
     author = {A. N. Ryaskin},
     title = {The number of models for complete theories of unars},
     journal = {Matemati\v{c}eskie trudy},
     pages = {162--182},
     publisher = {mathdoc},
     volume = {8},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1988_8_a7/}
}