@article{VMJ_2007_9_3_a1,
     author = {A. E. Gutman and A. V. Koptev},
     title = {Spaces of $CD_0$-functions and doubling in the sense of {Aleksandrov}},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {11--21},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2007_9_3_a1/}
}