Literature
  • 1971
  • The Rabbit-eared barnacle, Conchoderma auritum, on the teeth of the dolphin Stenella frontalis. Zeitschrift für Säugtierkunde, 36 (5): 316-317.
  • 1908
  • Copepoden. Nordisches Plankton, 4(8): 1-264. Lipsius & Tischer, Kiel. (Reprint Asher & Co., Amsterdam, 1964).
  • , 1971
  • Seasonal occurrence of Mysidacea in the surface plankton of the southern North Sea near the 'Texel' lightship. Netherlands Journal of Sea Research, 5(2): 227-239.
  • , 1969b
  • Second note on the occurrence of stomatopod larvae in the North Sea near the lightship "Texel". Netherlands Journal of Sea Research, 4(3): 350-353.
  • , 1969c
  • On the occurrence of Euphausiacea in the surface plankton near the lightship "Texel" in the northern North Sea. Netherlands Journal of Sea Research, 4(3): 364-371.
  • , 1969a
  • On the occurrence of Isopoda in the surface plankton in the North Sea near the lightship Texel Netherlands Journal of Sea Research, 4(3): 354-363.
  • , 1966
  • On the occurrence of Stomatopoda in the North Sea with special reference to the larvae from the surface plankton near the lightship 'Texel'. Netherlands Journal of Sea Research, 3(1): 1-12.
  • , 1972
  • Short note on the occurrence of Cumacea in the surface plankton collected at "Texel" lightship in the southern North Sea. Zoologische Bijdragen, 13: 71-73.
  • 1972
  • Decapoda and decapod larvae in the surface plankton from the Southern North Sea near "Texel" lightship. Zool. Bijdr. Leiden, 13: 74-97.
  • 1997
  • Pelagic Molluscs of the World. World Biodiversity Database CD-ROM Series. Version 1.0. ETI, University of Amsterdam, Amsterdam.
  • 1981
  • A monograph of the order Pyrosomatida (Tunicata, Thaliacea). Journal of Plankton Research, 3(4): 603-631.
  • 1961
  • Contributions towards a plankton atlas of the NE Atlantic and the North Sea. Part 3. Gastropoda. Bulletin of Marine Ecology, 5: 98-101.
  • , 1962
  • Continuous Plankton Records: Contribution to a plankton atlas of the NE Atlantic and The North Sea. Part VI: The seasonal and annual distributions of the Gastropoda. Bulletin of Marine Ecology, 5: 247-253.
  • 1903
  • Ctenophoren. Nordisches Plankton, 6(11): 1-7. Lipsius & Tischer, Kiel. (Reprint Asher & Co., Amsterdam, 1964).
  • 1906b
  • Acraspede Medusen. Nordisches Plankton, 6(11): 40-64. Lipsius & Tischer, Kiel. (Reprint Asher & Co., Amsterdam, 1964).
  • 1906a
  • Siphonophoren. Nordisches Plankton, 6(11): 9-37. Lipsius & Tischer, Kiel. (Reprint Asher & Co., Amsterdam, 1964).
  • , 1972
  • New records of hydromedusae from the shelf area off the Kerala Coast. Journal of the Marine Biological Association of India 11(1-2): 40-43.
  • 1998
  • A provisional generic classification of the Family Loliginidae. In: N.A. Voss, M. Vecchione, R.B. Toll and M.J. Sweeney (eds.), Systematics and biogeography of cephalopods, Volume 1. Smiths. Contrib. Zool, 586: 215-222 (
  • 1946a
  • Hydrozoa (C I). A. Hydropolypen. Fauna van Nederland 14: 1-336.
  • 1966
  • The origin of the stomatopod larvae of the southern North Sea. Netherlands Journal of Sea Research, 3: 13-20.
  • 1996
  • Hyperiid amphipods (Amphipoda, Hyperiidia) of the World Ocean. Science Publishers, Enfield USA. 650 pp.
  • 1913
  • Turbellaria. II. Rhabdocoelida. Das Tierreich, 35. Berlin. pp i-xx, 1-484.
  • , 1972
  • Cephalopods of Hong Kong. 138 pp. Hong Kong Govt. Press.
  • 1980
  • A generic revision of the family Cranchiidae. Bull. Mar. Sc., 30(2): 365-412.