Dolgopolsky, I.; Gudimenko, Y.; Kleiman, J. Thermoanalytical Approach for Differentiation Between Surface and Bulk Oxidation for Polyethylene Films. Oxidative Behaviour of Materials by Thermal Analytical Techniques. ASTM STP 1326, A.T. Riga and G.H. Patterson, Eds., American Society for Testing and Materials, 1997, 102-115.