Vincent A. Cicirello Stephen F. Smith Enhancing Stochastic Search Performance by Value-Biased Randomization of Heuristics. 5-34 2005 11 J. Heuristics 1 http://dx.doi.org/10.1007/s10732-005-6997-8 db/journals/heuristics/heuristics11.html#CicirelloS05