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3. Polymer Spectroscopy;Hendra,1996
4. Atlas of Plastics Additives;Hummel,2002
5. G. Vidotto, M. Piana, PVC and fresh food packaging, Italia Imballaggio, MAT-pellicola PVC imp., 2-10-2003, 16 (19), 2002, pp. 120–128. See also http://www.foodplast.com/upload/documents/document13.pdf.