Fraser, 1973, Phytochemistry, 12, 1787, 10.1016/0031-9422(73)80403-0
Fukui, 1965, J, Chem. Soc. Jpn, Pure Chem. Sect., 86, 1079
Zimmermann, 1978, Lipids, 13, 313, 10.1007/BF02533720
Bohlmann, 1979, Phytochemistry, 18, 1177, 10.1016/0031-9422(79)80129-6