Ahmed et al., "Labdane Diterpenes From Brickellia Vernicosa," Phytochemistry, vol. 25, No. 6, pp. 1385-1388, 1986. |
Teresa et al., "Diterpenoids of Halimium Viscosum," Phytochemistry, vol. 24, No. 4, pp. 791-794, 1985. |
Bohlmann et al., "Neue alpha-Santalen-Und Labdan-Derivate Aus Ayapana Amygdalina," Phytochemistry, vol. 18, pp. 1997-1998. |
Hecker, "New Toxic, Irritant and Cocarcinogenic Diterpene Esters from Euphorbiaceae and from Thymelaecae," Pure and Appl. Chem., vol. 49, p. 1423. |
Nair et al; Phytochemistry, vol. 15 (11), pp. 1776-1778 (1976). |
Nair et al; Chemical Abstracts; 104(15): 126537q/Fitoterapia,(56)(4); 249-50;"Polyphenolic Compounds From Leaves of Acanthospermum hispidum". |
De Pascual et al; Chemical Abstracts; 103(5);34870u;/Phytochemistry (24)(4), 791-4 "Diterpenoids of Halimium viscosum", 1985. |