@article{FPM_2010_16_7_a4,
     author = {A. N. Koryukin and A. M. Sebeldin and A. L. Sylla},
     title = {Rings with the greatest common divisor},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {69--74},
     publisher = {mathdoc},
     volume = {16},
     number = {7},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2010_16_7_a4/}
}