Roe, R. J.; Grood, E. S.; Shastri, R.; Gosselin, C. A., and Noyes, F. R. Effect of radiation sterilization and aging on ultrahigh molecular weight polyethylene. J Biomed Mater Res. 1981 Mar; 15(2):209-30
Read Abstract Here: effect-of-radiation-sterilization-and-aging-on-ultrahigh-molecular-weight-polyethylene