title: Origin and evolution of arthropod visual systems. Introduction.
authors: Universitat Ulm, Sektion Biosystematische Dokumentation and Abteilung Neurobiologie, Fakultat F. Naturwissenschaften, Helmholtzstrasse 20, 89081 Ulm, Germany.
authors: Steffen
authors: S
authors: Harzsch
authors: Roland
authors: R
authors: Melzer