@article{MZM_1978_24_5_a13,
     author = {I. V. Protasov},
     title = {Projections of zero-dimensional nilpotent groups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {717--722},
     publisher = {mathdoc},
     volume = {24},
     number = {5},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1978_24_5_a13/}
}