@article{DAN_1966_168_3_a0,
     author = {V. A. Andrunakievich and Yu. M. Ryabukhin},
     title = {A contribution to the theory of ideals in rings, modules and groupoids},
     journal = {Doklady Akademii Nauk},
     pages = {495--498},
     publisher = {mathdoc},
     volume = {168},
     number = {3},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_168_3_a0/}
}