Citation: Pjm. Mols et Jm. Boers, Comparison of a Canadian and a Dutch strain of the parasitoid Aphelinus mali (Hald) (Hym., Aphelinidae) for control of woolly apple aphid Eriosoma lanigerum (Haussmann) (Hom,, Aphididae) in the Netherlands: a simulation approach, J APPL ENT, 125(5), 2001, pp. 255-262