Composition #5: ALNURI, MA., HANNOUN, MA., ZATAR, NA., ABUEID, MA., ALJONDI, WJ., HUSSEIN, AI., ALISHTAYEH, MS. PLUMBAGIN, A NATURALLY-OCCURRING NAPHTHOQUINONE - ITS ISOLATION, SPECTROPHOTOMETRIC DETERMINATION IN ROOTS, STEMS, AND LEAVES IN PLUMBAGO-EUROPAEA L . spectroscopy letters, 1994, vol. 27, no. 4, p. 409–416. DOI: 10.1080/00387019408007247.
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