@article{AL_1963_2_6_a2,
     author = {V. E. Govorov},
     title = {Semi-injective modules},
     journal = {Algebra i logika},
     pages = {21--50},
     publisher = {mathdoc},
     volume = {2},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1963_2_6_a2/}
}