1. Bishop, J. W., 1968. Comparative study of feeding by the ctenophoresBolinopsis andPleurobrachia. In: Abstracts of papers submitted for the 31st Annual Meeting of the American Society of Limnology and Oceanography, Madison, Wisc. 17 – 21. 6. 1968.
2. —— 1969. A comparative study of feeding rates of tentaculate ctenophores.Ecology 49, 996–997.
3. Fraser, H. J., 1962. The role of ctenophores and salps in zooplankton production and standing crop.Rapp. P.-v. Réun. Cons. perm. int. Explor. Mer 153, 121–123.
4. Greve, W., 1968. The “planktonkreisel” a new device for culturing zooplankton.Mar. Biol. 1, 201–203.
5. —— 1969. Zur Ökologie der CtenophorePleurobrachia pileus Fabr. Math.-nat. Diss., Kiel, 138 pp.