@article{IM2_1993_40_2_a4,
     author = {V. K. Zakharov},
     title = {The {Gordon} preimage of an {Aleksandrov} space as an enclosed covering},
     journal = {Izvestiya. Mathematics},
     pages = {405--424},
     year = {1993},
     volume = {40},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1993_40_2_a4/}
}