@article{FPM_2012_17_4_a12,
     author = {A. A. Tuganbaev},
     title = {Comultiplication modules over noncommutative rings},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {217--224},
     year = {2012},
     volume = {17},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2012_17_4_a12/}
}