1. Isolation of acetylenic sterols from a higher plant. Further evidence that marine sterols are not unique
2. For references, see the following reivew articles: C.Djerassi, Proceedings of the Alfred Benzon Symposium 20, eds. P. Krogsgaard-Larsen, S. B. Christinsen, and H.Kofod, Munksgaard, Copenhagen, 1984, pp. 164–176;
3. Recent studies in the marine sterol field
4. Recent progress in the marine sterol field
5. F. J. Schmitz , in ‘Marine Natural Products,’ ed. P. J. Scheuer, Academic, New York, 1978, vol. 1, pp. 241–298;