1. Greca MD, Ferrara M, Fiorentino A, Monaco P, Previtera L. Antialgal compounds from zantedeschia aethiopica. 1998 Nov;49(5) Phytochemistry. 1299-1304.

2. Etse JT, Gray AI, Waterman PG, Bates CD, Watson DG, Thomas DW. Chemistry in the annonaceae, part XXV. sesquiterpenes from the stem bark of cleistopholis glauca. J. Nat. Prod., 1988, Mar;51 (2), 314-318.