1. “Synthetic Organic Chemicals,” U. S. Production and Sales, 1966 U. S. Govt. Printing Press, Washington, D.C., 1968.
2. J. M. Straley “Disperse Dyes,” in CSD III because many disperse dyes (or closely related compounds) derived from anthraquinone are intermediates for vat dyes.
3. Herstellung von Anthrachinonderivaten aus dem DIELS-ALDER-Addukt von 1,4-Naphtochinon und 5,5-Dimethoxy-1,2,3,4-tetrachlorcyclopentadien