@article{VMUMM_2015_6_a9,
     author = {O. V. Rubleva},
     title = {Ricci curvature of a weighted tree},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {52--54},
     publisher = {mathdoc},
     number = {6},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2015_6_a9/}
}