@article{IM2_1984_22_3_a5,
     author = {A. L. Semenov},
     title = {Logical theories of one-place functions on the set of natural numbers},
     journal = {Izvestiya. Mathematics },
     pages = {587--618},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1984_22_3_a5/}
}