Hamed R. Tareghian Seyyed Hassan Taheri A solution procedure for the discrete time, cost and quality tradeoff problem using electromagnetic scatter search. 1136-1145 2007 190 Applied Mathematics and Computation 2 http://dx.doi.org/10.1016/j.amc.2007.01.100 db/journals/amc/amc190.html#TareghianT07