Operations Research and Decisions
Operations Research and Decisions > 2012 > Vol. 22, No. 2 > 5--13
Operations Research and Decisions > 2012 > Vol. 22, No. 2 > 45--54
Operations Research and Decisions > 2012 > Vol. 22, No. 2 > 15--34
Operations Research and Decisions > 2012 > Vol. 22, No. 2 > 35--43