@article{MZM_1990_47_1_a16,
     author = {A. A. Lashkhi},
     title = {Harmonic mappings of modules},
     journal = {Matemati\v{c}eskie zametki},
     pages = {161--163},
     publisher = {mathdoc},
     volume = {47},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_1_a16/}
}