Anthelmintic Activity of Aporphine Alkaloids from Cissampelos capensis - Ayers, Sloan; Zink, Deborah L; Mohn, Kenneth; Powell, Joanne Staats; Brown, Christine M; Murphy, Terry; Brand, Robert; Pretorius, Seef; Stevenson, Dennis; Thompson, Donald; Singh, Sheo B (Planta Medica, 2007)