Min Ouyang Qi Fei Ming-Hui Yu Gao-Xia Wang En-Jie Luan Effects of redundant systems on controlling the disaster spreading in networks. 390-397 2009 17 Simulation Modelling Practice and Theory 2 http://dx.doi.org/10.1016/j.simpat.2008.09.013 db/journals/simpra/simpra17.html#OuyangFYWL09