@article{MZM_2010_87_1_a8,
     author = {O. V. Markova},
     title = {On {Some} {Properties} of the {Length} {Function}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {83--91},
     publisher = {mathdoc},
     volume = {87},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2010_87_1_a8/}
}