9Ansari,Md I A,Datta A K. An overview of sterilization methods for packaging mate rials used in aseptic packaging systems[J]. Transactions of the Institution of Chemical Engineers, 2003,81 (3) :57-65.
10Saeid M H, O Sampa M H,Chmielewski G A. Radiation treat- ment for sterilization of packaging materials[J]. Radiation Phys ics and Chemistry,2007,76(8):1 535-1 541.
