1. ASTM D5947 - 96, Standard Test Methods for Physical Dimensions of Solid Plastics Specimens, ASTM International.
2. ASTM D - 2873,Standard Test Methods for Interior Porosity of Poly (Vinyl Chloride) (PVC) Resins by Mercury Intrusion Porosimetry, ASTM International.
3. Powder Surface Area and Porosity;Lowell,1991
4. PMI Conference 2000 Proceedings,PMI Short Course, Ithaca, NY, Oct. 16–19, 2000.
5. Porous Materials, Inc., http://www.pmiapp.com.