@article{SM_1979_35_2_a4,
     author = {A. A. Tuganbaev},
     title = {The structure of modules close to projective modules},
     journal = {Sbornik. Mathematics},
     pages = {219--228},
     year = {1979},
     volume = {35},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1979_35_2_a4/}
}