1. The Cambrian netlike fossil Microdictyon;Bengtson,1986
2. Morphology of fossil arthropods as a guide to phylogenetic relationships;Bergström,1978
3. Morphology and systematics of early arthropods;Bergström;Abhandlungen des naturwissenschaftlichen Vereins in Hamburg (NF),1981
4. Opabinia and Anomalocaris, unique Cambrian ‘arthropods’;Bergström;Lethaia,1986
5. Cambrian Onychophora or Xenusians;Bergström;Zoologischer Anzeiger,2001