1. Variation in the costs and benefits of mutualism: the interaction between yuccas and yucca moths;Addicott;Oecologia,1986
2. The ecology of the pollinators and predators of Frasera speciosa;Beattie;Ecology,1973
3. Parasitismus oder Symbiose? Beziehungen zwischen einem parasitischen Bestäuber (Hadena bicruris Hufn.,, Lepidoptera: Noctuidae) und seinen Wirtspflanzen (Silene-Arten, Caryophyllaceae);Bopp;in press Zoologica Acta.,2003
4. Riddles around the pollination of Melandrium album (Mill.) Garcke (Caryophyllaceae) during the oviposition by Hadena bicruris Hufn. (Noctuidae, Lepidoptera), I;Brantjes;Proc. Kon. Ned. Akad. Wet. Ser. C.,1976