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History
- January 14, 2014.
Copyright
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND Unported 3.0 license.
Author Information
- 1Dipartimento di Fisica ‘G. Galilei’ & CNISM, INFN, Università di Padova, Via Marzolo 8, 35131 Padova, Italy
- 2Center for Complex Network Research and Department of Physics, Biology and Computer Science, Northeastern University, Boston, Massachusetts 02115, USA
- 3Institute of Physics, Budapest University of Technology and Economics Budafokiut 8, Budapest, H-1111, Hungary
- 4Department of Physics, University of Maryland, College Park, MD 20742, USA