@article{DAN_1992_325_5_a0,
     author = {V. A. Andrunakievich and Yu. M. Ryabukhin},
     title = {Idempotents and quasiregularity with respect to right ideals of},
     journal = {Doklady Akademii Nauk},
     pages = {889--892},
     publisher = {mathdoc},
     volume = {325},
     number = {5},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_325_5_a0/}
}