Error bound comparisons for aggregation/disaggregation techniques applied to the transportation problem. - Susan K. Norman; David F. Rogers; Martin S. Levy (Comput. Oper. Res., 1999)

Nature Reserve Site Selection to Maximize Expected Species Covered. - Jeffrey D. Camm; Susan K. Norman; Stephen Polasky; Andrew R. Solow (Oper. Res., 2002)