Practice Abstract. - Donald L. Keefer; Andrew P. Armacost; Cynthia Barnhart; Keith A. Ware; Alysia M. Wilson; Wynand C. DuPuy (Interfaces, 2001)

UPS Optimizes Its Air Network. - Andrew P. Armacost; Cynthia Barnhart; Keith A. Ware; Alysia M. Wilson (Interfaces, 2004)