1. Indigo, Δ2,2′-Bipseudoindoxyl;Chemistry of Heterocyclic Compounds: A Series Of Monographs;2008-01-02
2. The analysis of indigoid dyes as leuco forms by NMR spectroscopy*;Coloration Technology;2000-03
3. Vinyl- and Arylnitrogen Compounds;Comprehensive Organic Functional Group Transformations;1995
4. References to Volume 2;Comprehensive Organic Functional Group Transformations;1995