@article{VMUMM_1993_4_a12,
     author = {L. I. Sedov},
     title = {Spaces and fields},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {54--62},
     year = {1993},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1993_4_a12/}
}