Fubito Toyama Kenji Shoji Juichi Miyamichi An iterated greedy algorithm for the node placement problem in bidirectional Manhattan street networks. 579-584 2008 GECCO http://doi.acm.org/10.1145/1389095.1389207 conf/gecco/2008 db/conf/gecco/gecco2008.html#ToyamaSM08