1. Ackefors, H. 1972. The amount of zooplankton expressed as numbers, wet weight and carbon content in the Askö area. (The northern Baltic proper). Medd. Havsfiskelab.,Lysekil, No 129 (Mimeogr.)
2. Ackefors, H., Hernroth, L. & Lindahl, O 1975. Studies on the primary and secondary production of plankton in the Baltic. Medd. Havsfiskelab. Lysekil No 186: 1?5. (Mimeogr.)
3. Ackefors, H., Hernroth, L., Lindahl, O. & Wulff, F. 1978. Ecological production studies of the phytoplankton and zooplankton in the Gulf of Bothnia. Finnish Mar. Res. No 244: 116?126.
4. Alasaarela, E. 1977. Oulun edustan biologinen perusselvitys. Vuosiraportti 1976. Tutkimustulooksia Perämeren keskiselätä ja Oulun edustalta vv. 1975?1976. Pohjois-Suomen Vesitutkimustoimisto. 148 pp. Oulu (Mimeogr.)
5. Alasaarela, E. 1978a. Dynamics of the hydrography, nutrients and primary production of the coastal waters of the Bothnian Bay off Oulu. Aquilo Ser. Bot. 16: 16?38.