@article{LJM_2001_8_a4,
     author = {E. N. Sosov},
     title = {On {Hausdorff} intrinsic metric},
     journal = {Lobachevskii journal of mathematics},
     pages = {185--189},
     year = {2001},
     volume = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2001_8_a4/}
}