Literature
  • 1926
  • Lamellibranchia. In Grimpe, G. & Wagner, E.: Die Tierwelt der Nord- und Ostsee.
  • 1993
  • Check list of species (algae, invertebtates and vertebrates) found in the vicinity of the island of Helgoland (North Sea, German Bight) - a review of recent records. Helgoländer Meeresunters., 47: 1-34.
  • 1990
  • Mollusca II: Bivalvia and Cephalopoda. In: The Marine Fauna of the British Isles and North-West Europe. (ed. P.J. Hayward & J.S. Ryland). Clarendon Press, Oxford: 731-793.
  • , 1990
  • The Marine Fauna of the British Isles and North-West Europe. Clarendon Press, Oxford.
  • 1990
  • Mollusca I: Polyplacophora, Scaphopoda, and Gastropoda. In: The Marine Fauna of the British Isles and North-West Europe. (ed. P.J. Hayward & J.S. Ryland). Clarendon Press, Oxford: 628-730.
  • Hoeksema 1993
  • Phaseolus guilonardi n. sp., a new species of Phaseolidae (Bivalvia: Protobranchia) from the southern North Sea Basin. Basteria, 57: 95-102.
  • 1926
  • Opisthobranchia. In Grimpe, G. & Wagner, E.: Die Tierwelt der Nord- und Ostsee.