@article{ZNSL_1972_32_a7,
     author = {V. A. Lifshits and V. P. Chernov},
     title = {A~non-compact closed sphere in a~constructive compact metric space},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {53--58},
     publisher = {mathdoc},
     volume = {32},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_32_a7/}
}