@article{MZM_1984_36_6_a4,
     author = {S. V. Rychkov},
     title = {Cartesian products of modules},
     journal = {Matemati\v{c}eskie zametki},
     pages = {829--837},
     publisher = {mathdoc},
     volume = {36},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1984_36_6_a4/}
}