1. T.G. Vemardalds, from reprint of “Improving dispersion of organic pigments”, modern paint and coatings (Sept.1985).
2. Microscopy and Photomicrography;Smith,1994
3. Infrared spectra obtained by Sommer, A.J., Molecular Microspectroscopy Laboratory, Dept. of Chemistry & Biochemistry, Miami University, Oxford, OH (Dec. 1998).
4. Crystal Identification with the Polarizing Microscope;Stoiber,1994