1. M. J. Bunten , M. W.Newman, P. V.Smallwood and R. C.Stephenson, Encyclopaedia of Polymer Science and Engineering, vol. 17 and Supplement, pp 241–392, 1989
2. Studies of possible chemical emissions from PVC articles used in indoor applications and the effect on indoor air quality
3. EU Directive 89/106/EEC, Official Journal of the European Communities L40, pp 12–26, 11th February 1989
4. European Standard EN13419 (1999), European Committee for Standardisation, Rue de Stassart 36, B-1050 Brussels