1. Plastics keeps ripeness under wraps;Sonsino;New Scientist,1986
2. Identification and Analysis of Plastics;Haslem,1972
3. Forensic characteristics of coloured polyethylene bags;Nir-El;Journal of Forensic Sciences,1994
4. The analysis of clingfilms by infrared spectroscopy and thermal desorption capillary gas chromatography;Gilburt;Journal of the Forensic Science Society,1991
5. The comparison of matching low density polyethylene bags by infrared spectroscopy;Cleverly;Journal of Forensic Sciences,1979