1. Karanov E. Effect of some indole and phenolic compounds on the ageing of aldewey. Verlag Chemie Weinheim. 1972;2:467-47.
2. Alexieva V, Karanov E, Nikolova R, et al. Plant growth regulating activity of some phosphorus derivatives of coumarin. Bulg J Plant Physiol. 1995;21(1): 45-51.
3. Aurapten, a coumarin with growth inhibition against Leishmania major promastigotes;Napolitano;Braz J Med Biol Res,2004
4. A new bicoumarin from stellera chamaejasme;ZH;J Asian Nat Prod Res,2001
5. Isolation of coumarins and ferulate from the roots of Angelica purpuraefolia and the antitumor activity of khellactone;Lee;Phytother Res,2007