1. L.S. Ettre, A. Zlatkis, eds., “75 Years of Chromatography — A Historical Dialogue”, Elsevier, Amsterdam, 1979.
2. L.S. Ettre, V.R. Meyer, J. Chromatogr.600, 3 (1992).
3. Sh.A. Karapetyan, Khimia i Zhizn (Chemistry and Life)3, 86 (1985).
4. M. Tswett, Ber. Deut. Bot. Gesellsch.24, 384 (1906).
5. M. Tswett, “Khromofilly v Rastitel'nom i Zhivotnom Mire” (Chromophylls in the Plant and Animal World). Karlassiakoff, Warsaw, 1910.