1. Triphenylmethane and Related Dyes;Kirk-Othmer Encyclopedia of Chemical Technology;2000-12-04
2. Fibers, 4. Synthetic Organic;Ullmann's Encyclopedia of Industrial Chemistry;2000-06-15
3. Dithiocarbamic Acid and Derivatives;Ullmann's Encyclopedia of Industrial Chemistry;2000-06-15
4. Anthraquinone Dyes and Intermediates;Ullmann's Encyclopedia of Industrial Chemistry;2000-06-15
5. Phosphorus Compounds, Inorganic;Ullmann's Encyclopedia of Industrial Chemistry;2000-06-15