6D.J.Primeaux Ⅱ.Polyurea Spray Technology in Commercial Applications. 60 Years of Polyurethanes: International Symposium and Exhibition. University of Detroit Mercy, 1998:224 - 238.
7A. Perez, K. M. House, etc. Secondary Aliphatic Diamine Chain Extenders in Miphatic Polyurea Spray Applications. UTECH 2000 Conference Paper. The Hague, Netherlands, 2000.
8Aureliano Perez, Jay A.Johnston. Performance and Processing Enhancements of Aromatic Polyurea Elastomer Systems Prepared from High 2, 4' - MDI Isoeyanates.Proceedings of the Polyurethanes Conference 2000, 2000.
9Marc Broekaert, Wolfgang PiUe - Wolf. The Influence of Isomer Composition and Functionality on the Final Properties of Aromatic Polyurea Spray Coatings. UTECH 2000 Conference Paper. The Hague, Netherlands, 2000.
10Bayer Corporation Coatings & Colorants Division. Aliphatic Polyurea Coatings Based on Polyaspartic Esters. Presented by Edward P. SquiUer on the 1st PDA Annual Conference Meeting. New Orleans, louisiana, 2000.