Chen Wang Myung Ah Park James Willson Yongxi Cheng Andras Farago Weili Wu On approximate optimal dual power assignment for biconnectivity and edge-biconnectivity. 180-190 2008 396 Theor. Comput. Sci. 1-3 http://dx.doi.org/10.1016/j.tcs.2008.01.029 db/journals/tcs/tcs396.html#WangPWCFW08