@article{ZNSL_1974_40_a16,
     author = {V. P. Chernov},
     title = {On some properties of mappings of sheafspaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {136--141},
     publisher = {mathdoc},
     volume = {40},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1974_40_a16/}
}