Munde, T., Maddula, R. K., Svatoš, A., & Schneider, B. (2011). The biosynthetic origin of oxygen functions in phenylphenalenones of Anigozanthos preissii inferred from NMR- and HRMS-based isotopologue analysis. Phytochemistry, 72, 49-58. doi:10.1016/j.phytochem.2010.10.007.