1. 1969: Calcification in the calcareous alga Halimeda opuntia (L) (Chlorophyta, Udoteaceae). - Ph. D. Thesis, University of the West Indies, Kingston, Jamaica.
2. 1972a: Studies on the mineral content of calcareous algae. - Bull. Mar. Sci. (in press).
3. and , 1947: Über die membransubstanzen von Chlorochytridion tuberculatum W. Vischer. - Experientia, Vol. III/12: 492–493.