"Model Code Provisions Pertaining to Rigid Foam Plastics Insulation,"Society of the Plastics Industry, Plastics in Construction Council Bulletin (May 1981).
2.
Kresta, J.E. and Frisch, K.C., "A Comparative Study of the Effect on Phosphorus and Chlorine in Urethane and Isocyanurate-Urethane Foams,"J. of Cellular Plastics (March/April 1975).
3.
Nawata, T., Kresta, J.E. and Frisch, K.C., "Comparative Studies of Isocyanurate and Isocyanurate-Urethane Foams,"J. of Cellular Plastics (September/October 1975).
4.
Cear, S., Feltzin, J. and Baldino, J.P., "Polyisocyanurate Foams Having Low Friability and Flame Spread,"J. of Cellular Plastics (January/February 1977).
5.
Hughes, J.M. and Clinton, J.L., "Development of Lower Cost Polyurethane Modified Polyisocyanurate and Polyurethane Rigid Foams," SPI 25th Annual Urethane Division Technical Conference (October 1979).
6.
Box, G.E.P. and Lucas, H.L., "Design of Experiments in Non-Linear Situations,"Biometrika, 46 (1959).
7.
Davies, Owen, L., ed. The Design and Analysis of Industrial Experiments.Hafner Publishing Company, New York, NY (1960).
8.
Yates, L., "The Design and Analysis of Factorial Experiments,"Imperial Bureau of Soil Science, Technical Communication No. 5 ( 1937).
9.
Daniel, Cuthbert and Wood, Fred S.Fiting Equations to Data. Wiley-Interscience , New York, NY (1971).
