1. B.A. Boukamp, Reports CT88/265/128, CT89/214/128, University of Twente, The Netherlands, May 1989.
2. ISO 2409 standard, Paints and varnishes. Cross cut test, Geneva, Switzerland, 1992.
3. ISO 4628-1 standard, Paints and varnishes. General principles and rating schemes, Geneva, Switzerland, 1982.
4. ISO 4628-2 standard, Paints and varnishes. Designation of degree of blistering, Geneva, Switzerland, 1982.
5. ISO 4628-3 standard, Paints and varnishes. Designation of degree of rusting, Geneva, Switzerland, 1982.