1. Characterization of Municipal Solid Waste: 1992 Update, EPA-530-R-92-019 (Washington, D.C.: EPA, 1992).
2. J.L. Holman, J.B. Stephenson, and M.J. Adam, Recycling of Plastics from Urban and Industrial Refuse, Report of Investigations 7955 (Washington, D.C.: U.S. Bureau of Mines, 1974).
3. M.H. Stanczyk and R.S. DeCesare, Resource Recovery from Municipal Solid Waste, Bulletin 683 (Washington, D.C.: U.S. Bureau of Mines, 1985).
4. E.G. Herkenhoff, “Mining and Processing Equipment Can Assist in Future Garbage Disposal,” Engineering and Mining Journal, 190(1) (1989), pp. 108–109.
5. K. Saito, I. Nagano, and S. Izumi, “New Separations Techniques for Waste Plastics,” Proceedings of the Fifth Mineral Waste Utilization Symposium (1976), pp. 322–328.