@article{article4dcfe760,
title   = {Border trees of complex networks},
author = {Villas Boas, Paulino Ribeiro and Rodrigues, Francisco Aparecido and Travieso, Gonzalo and Costa, Luciano da Fontoura},
year = {2008},
doi = {10.1088/1751-8113/41/22/224005},
journal   = {Journal of Physics A}
}