N. L. Vauquelin цит. по: Ball, Bright Earth, с. 176.
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I. Sample, ‘Van Gogh Doomed his Sunflowers by Adding White Pigments to Yellow Paint’, в: the Guardian (14 Feb. 2011); M. Gunther, ‘Van Gogh’s Sunflowers may be Wilting in the Sun’, в: Chemistry World (28 Oct. 2015). Доступно на: .
