G. C. H. Derksen and T. A. Van Beek, ‘Rubia Tinctorum L.’, в: Studies in Natural Products Chemistry, Vol. 26 (2002), с. 632.
364
J. Wouters et al., The Identification of Haematite as a Red Colourant on an Egyptian Textile from the Second Millennium BC’, в: Studies in Conservation, Vol. 35, No. 2 (May 1990), с. 89.
