1. Numbers of references are common throughout the text, Table 1, and Table 2.
2. Interesting aspects of marine natural products chemistry
3. For recent reviews: S. Liaaen-Jensen, In NATO Conference on Marine Natural Products (Edited by D.J. Faulkner and W.H. Fenical), p.239–260, Plenum Press, New York (1977).
4. C.Fr.W. Kruckenberg, Vergleichend-Physiol. Studien, Ser.1, Part 2, 65–77(1880).