Composition #2: Babula, Petr., Mikelova, Radka., Adam, Vojtech., Kizek, Rene., Havel, Ladislav., Sladky, Zdenek. Using of liquid chromatography coupled with diode array detector for determination of naphthoquinones in plants and for investigation of influence of pH of cultivation medium on content of plumbagin in Dionaea muscipula . journal of chromatography b-analytical technologies in the biomedical and life sciences, 2006, vol. 842, no. 1, p. 28–35. DOI: 10.1016/j.jchromb.2006.05.009.
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