@article{DAN_1961_137_6_a1,
     author = {A. A. Bovdi},
     title = {Crossed products of a semigroup and a ring},
     journal = {Doklady Akademii Nauk},
     pages = {1267--1269},
     publisher = {mathdoc},
     volume = {137},
     number = {6},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a1/}
}