%0 Journal Article %T Nestedness and degree distributions are necessarily linked in mutualist systems %A Enrique Burgos %A Horacio Ceva %A Roberto P. J. Perazzo %A Mariano Devoto %A Diego Medan %A Martin Zimmermann %A Mariana Delbue %J Quantitative Biology %D 2006 %I arXiv %X Replacement of papers q-bio/0605026 and q-bio/0607043 by a single manuscript (q-bio/0701029) follows suggestions from a magazine's referee %U http://arxiv.org/abs/q-bio/0607043v2