@article{VMUMM_2015_5_a8,
     author = {R. A. Savchenko},
     title = {The hierarchical hub labeling is non-efficient},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {44--47},
     year = {2015},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2015_5_a8/}
}