Cafiero, R.De Los Rios, P.Valleriani, A.Vega, J.2010-03-222010-03-222010-03-22199910.1103/PhysRevE.60.R1111https://infoscience.epfl.ch/handle/20.500.14299/48390Levy-nearest-neighbors Bak-Sneppen modeltext::journal::journal article::research article