Satoko Mamada Takeaki Uno Kazuhisa Makino Satoru Fujishige An O(n log<sup>2</sup>n) algorithm for the optimal sink location problem in dynamic tree networks. 2387-2401 2006 154 Discrete Applied Mathematics 16 http://dx.doi.org/10.1016/j.dam.2006.04.010 db/journals/dam/dam154.html#MamadaUMF06