Voir House of Commons, 2002: Environment, Food and Rural Affairs Committee, Disposal of Refrigerators - Fourth Report, HC 673, Londres: The Stationary Office, et en particulier Minutes of Evidence, 26 mars 2002 (données fournies par Peter Jones, Biffa).
Zie: House of Commons, 2002: Environment, Food and Rural Affairs Committee, Disposal of Refrigerators - Fourth Report, HC 673, Londen: the Stationary Office, met name Minutes of Evidence, 26 maart 2002 (bewijsmateriaal van Peter Jones, Biffa).