Two estimation methods for singly constrained spatial distribution models / Jan van Est, Jan van SettenThe determination of regional disparities in Western Europe : paper pres. at the 3rd European congress on operations research, Amsterdam, April 1979 / Henk Voogd, Jan van SettenLeast-squares procedures for a multiplicative spatial distribution model / [by] Jan van Est [and] Jan van SettenWoonmilieudifferentiatie en migratie / auteur: Dree Op 't Veld ; interne begeleiding: Hans Heida ; gespreksverslagen: Jan van Setten ; externe begeleidingscommissie: J.T.M. Poulus ... [et al.]