1. A. G. Dementyev and O. G. Tarakanov, Structure and Properties of Foam Plastics [in Russian], Khimiya, Moscow (1983).
2. G. C. J. Bart, G. M. R. du Cause Nazelle, de, “Certification of thermal conductivity aging of PUR foam,” in: Proc. Polyurethanes World Congr., Netherlands (1991), pp. 75–80.
3. J. R. Shankland, “Blowing agent emission from insulation foams,” in: Proc. Polyurethane World Congr., Netherlands (1991) pp. 91–98.
4. F. J. Norton, “Thermal conductivity and life of polymer foams,” J. Cell. Plast., 3, No. 1, 23–36 (1967).
5. G. M. F. Jeffs and D. J. Sparrow, “Progress in the reduction and elimination of the use of CFC-s rigid polyurethane foam,” Cell. Polym.,9, No. 4, 253 (1990).