Buecher, E. and Gibbons, M.J. 2000. Interannual variation in the composition of the assemblages of medusae and ctenophores in St. Helena Bay, Southern Benguela Ecosystem. Scientia Marina. 64, S1 (Dec. 2000), 123–134. DOI:https://doi.org/10.3989/scimar.2000.64s1123.