@article{ZNSL_1976_60_a1,
     author = {A. P. Beltiukov},
     title = {Decidability of the universal theory of natural numbers with addition and divisibility},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {15--28},
     publisher = {mathdoc},
     volume = {60},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1976_60_a1/}
}