1. Food and Drug Administration. Points to consider for the use of recycled plastics: Food packaging, chemistry considerations. Div. Food Chemistry and Technology, HP 410, Washington, 1992.
2. Limonene and Myrcene Sorption into Refillable Polyethylene Terephtalate Bottles, and Washing Effects on Removal of Sorbed Compounds
3. Commission of the Europ. Communities. Draft synoptic document 7 on plastics Materials ans Articles intended to come in contact with Foodstuffs. CS/PM 2356, Bruxelles, 1994.