Coumarins and Carbazoles with Antiplasmodial Activity from Clausena harmandiana - Yenjai, Chavi; Sripontan, Somkrit; Sriprajun, Prachack; Kittakoop, Prasat; Jintasirikul, Amnuay; Tanticharoen, Morakot; Thebtaranonth, Yodhathai (Planta Medica, 2000)