1. and Polyethylene terephtha late: PET, in Modern Plastics Encyclopedia, Vol. 66, No. 11, p. 45, ed., McGraw-Hill Pub., New York (1989).
2. Polybutylene terephthalate: PBT, Modern Plastics Encyclopedia, Vol. 66, No. 11, p. 43. ed., McGraw-Hill Pub., New York (1989).
3. PET bottles recycled into insulation foam
4. H. Van, ed., “Polyester feed overcapacity will affect prices and trade,” Chem. Mark. Rep., 238, No. 15 (Oct. 15, 1990).