@article{AL_1989_28_5_a6,
     author = {A. S. Morozov},
     title = {Rigid constructive modules},
     journal = {Algebra i logika},
     pages = {570--583},
     publisher = {mathdoc},
     volume = {28},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1989_28_5_a6/}
}