1. Carvalho, M.T., Ferreira, C., Portela, A., Santos, J.T.: Application of fluidization to separate packaging waste plastics. Waste Manag. 29, 1138–1143 (2009)
2. Scheirs, J.: Polymer Recycling. Wiley Publication (1998)
3. Wahab, D.A., Abidin, A., Azhari, C.H.: Recycling trends in the plastics manufacturing
4. American Plastics Council: Best Practices in PET Recycling, Automated Sorting Systems NAPCOR (1997)
5. Anuoluwapo, O.A., Jimoh, K.A., Ayilara, O.A.: Evaluation of plastic waste classification systems. Br. J. Math. Comput. Sci. (2016)