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Heterogeneity, control variables, and maximizing behaviour : theory and an application to earnings functions with labor mobility
Hübler, Olaf, (1986)
Resource allocation for small scalf farmers of the star grass zone in Embu District, Kenya : a linear programming approach
Asamenew, G., (1985)
Schnittebenenverfahren für Travelling-Salesman- und verwandte Probleme
Holland, Olaf A., (1987)
On the existence and convergence aspects of the flexible programming method
Horst, M. F. ter, (1977)
Flexible solutions to systems of linear inequalities
van der Vet, R. P., (1977)