1. EC (2004) Directive 2004/12/EC of the European Parliament and of the Council of 11 February 2004 amending Directive 94/62/EC on packaging and packaging waste. European Communities, Brussels
2. Bayer FL (2002) Food Addit Contam 19:S111–S134
3. Begley TH, McNeal TP, Biles JE, Paquette KE (2002) Food Addit Contam 19:135–143
4. FDA (1992) Points to consider for the use of recycled plastics in food packaging: chemistry considerations (HFS-247). US Food and Drug Administration, Center for Safety and Applied Nutrition, Washington, DC
5. Franz R, Huber M, Welle F (1998) Deut Lebensm-Rundsch 94(9):303–308