Mahidol, C.; Ruchirawat, S.; Prawat, H.; Wongbundit, S. Cytotoxic Natural Products from Thai plants: A Recent Study. Pharm. Biol. 2000, 38(1), 6-15.

Thongnest, S.; Chawengrum, P.; Keeratichamroen, S.; Lirdprapamongkol, K.; Eurtivong, C.; Boonsombat, J.; Kittakoop, P.; Svasti, J.; Ruchirawat, S. Vernodalidimer L, a Sesquiterpene Lactone Dimer from Vernonia extensa and Anti-tumor Effects of Vernodalin, Vernolepin, and Vernolide on HepG2 Liver Cancer Cells. Bioorg. Chem. 2019, 103197.

Worawittayanon, P., Ruadreo, J., Disadee, W., Sahakitpichan, P., Sitthimonchai, S., Thasana, N., . . . Kanchanapoom, T. (2012). Iridoid and flavone glycosides from Asystasia gangetica subsp. micrantha and Asystasia salicifolia and their antioxidant activities. Biochemical Systematics and Ecology, 40, 38-42. https://doi.org/10.1016/j.bse.2011.08.016