1. Tripathi Rakesh, Pickett Kirby, Solaimanian Mansour, Kennedy, Thomas W. US pat. 6113681; 2000.
2. Effect of polyethylene on life of flexible pavements;Al-Hadidy;Constr Build Mater,2009
3. Mechanistic approach of polypropylene-modified flexible pavements;Al-Hadidy;J Mater Des,2009
4. Al-Hadidy AI, Tan Yi-qiu. Mechanistic analysis of ST and SBS-modified flexible pavements. Constr Build Mater, in press.
5. Ostermeyer Larry F. US pat. 5221703; 1993.