Fast geometric approximation techniques and geometric embedding problemsMarshall W. BernHoward J. Karloflet al.1989SCG 1989Conference paper
Finding k points with minimum diameter and related problemsAlok AggarwalHiros HiImaitet al.1989SCG 1989Conference paper
Bounded-diameter minimum spanning trees and related problemsJan-Ming HoD.T. Leeet al.1989SCG 1989Conference paper