S.  Morlat-Therias, Fanton, E., Tomer, N. S., Rana, S., Singh, R. P., and Gardette, J. Luc, ?Photooxidation of vulcanized EPDM/montmorillonite nanocomposites?, Polymer Degradation and Stability, vol. 91, no. 12, pp. 3033-3039, 2006.