Sesquiterpenoids from Pallenis spinosa. Phytochemistry 46(6): 1039-1043, 1997
A germacrane derivative from pallenis spinosa. Phytochemistry (Oxford) 30(8): 2788-2790, 1991
A sesquiterpene alcohol from pallenis spinosa. Phytochemistry 28(3): 849-850, 1989