1. “Chemistry and Biology of the Compositae”;Herz,1977
2. Herz, W., in “chemistry in Botanical Classification (G. Bendz and J. Santesson, Eds.), Nobel Symposium 25, p. 153. Nobel Foundation, Stockholm, and Academic Press, New York and London, 1973.
3. Geissman, T. A., and Irwin, M. A., in “Chemistry in Botanical Classification (G. Bendz and J. Santesson, Eds.), Nobel Symposium 25, p. 135. Nobel Foundation, Stockholm, and Academic Press, New York and London, 1973.
4. “Phytochemical Phylogeny,”;Mabry,1970
5. “Sesquiterpene Lactones,”;Yoshioka,1973