@article{DM_2012_24_4_a6,
     author = {V. A. Kolmykov},
     title = {On unstable branching graphs},
     journal = {Diskretnaya Matematika},
     pages = {81--90},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2012_24_4_a6/}
}