Michael A. Bender Bryan Bradley Geetha Jagannathan Krishnan Pillaipakkamnatt Sum-of-squares heuristics for bin packing and memory allocation. 2007 12 ACM Journal of Experimental Algorithmics http://doi.acm.org/10.1145/1227161.1227165 db/journals/jea/jea12.html#BenderBJP07