The efficient set in location problems with mixed norms (Lp)

In this paper the authors give a new approach to the efficient set for multiobjective location problems with mixed norms through projection directions. They show that the octogonal hull of the demand points is a good approximation for the efficient set when the norms belong to the family of lp norms. The authors also show that this bound may be reached, and give conditions for that. This is of great interest if distance patrons are randomly distributed.