On the Oxidation of 2-Hydroxy-1,4-naphthoquinone Derivatives with Alkaline Potassium Permanganate Samuel C. Hooker J. Am. Chem. Soc.1936; 58(7); 1174–79. doi:10.1021/ja01298a030
On the Oxidation of 2-Hydroxy-1,4-naphthoquinone Derivatives with Alkaline Potassium Permanganate. Part II. Compounds with Unsaturated Side Chains Samuel C. Hooker and Al Steyermark J. Am. Chem. Soc.1936; 58(7); pp. 1179–81; doi:10.1021/ja01298a031
