1. Standard Method for Chemical Analysis of White Titanium Pigments, ASTM D 1394-76 (reapproved 1981).
2. I. Drabaek and L.H. Christensen, private communication, 1983.
3. Standard Recommended Practice for Qualitative Identification of Polymers in Emulsion Paints, ASTM D 3168-73 (reapproved 1979).