1. Whittington's Dictionary of Plastics;Whittington,1978
2. Foams,1980
3. Plastic Materials and Processes;Schwartz,1982
4. “Structural Foams are Tougher Now; Reinforcement Opens Big New Options;Wood;Modern Plastics,1975
5. A Bright Outlook for Structural Foams;Wehrenberg;Materials Engineering,1982