  S. Voss. Heuristics for nonlinear assignment problems. In P.M. Pardalos and L.S. Pitsoulis, editors, Nonlinear assignment problems: Algorithms and applications , pages 000-000. Kluwer Academic Publishers, Boston, 0000.  S. Voss, A. Fink, and C. Duin. Looking ahead with the Pilot method. Annals of Operations Research , 000:000-000, 0000. MathSciNetMATH  D.