@article{MZM_2001_70_6_a5,
     author = {B. A. Kats},
     title = {Some {Generalizations} of the {Notion} of {Length}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {875--881},
     publisher = {mathdoc},
     volume = {70},
     number = {6},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_70_6_a5/}
}