REFERENCES
- Waring , D. R. & Hallas , G. ( 1990 ). The Chemistry and Application of Dyes , Plenum press : New York .
- Gregory , P. ( 1991 ). High-Technology Applications of Organic Colorants , Plenum press : New York .
- Gregory , P. ( 1990 ). Dyes and Pigments , 13 , 251 .
- Muthyals , R. ( 1997 ). Chemisty and Applications of Leuco Dyes , Plenum press : New York .
- Chatterjee , S. , Davis , P. D. , Gottshalk , P. , Kurz , M. E. , Sauerwein , B. , Yand , X. , & Schuster , G. B. ( 1990 ). J. Am. Chem. Soc. , 112 , 6329 .
- Son , Y. A. & Kim , S. H. ( 2007 ). Dyes and Pigments , 72 , 403 .