1. J.F. Rabek. In: Photostabilisation of Polymers, Principles and Applications; Elsevier Applied Science, London, 1990.
2. H. Berger, T.A.B.M. Bolsman, and D.M. Brower. In: G. Scott. (Ed.), Developments in Polymer Stabilisation-6; Applied Science Publishers, London, 1983.
3. R.W. Quine, G.R. Eaton, K. Ohno, and S.S. Eaton. In: G.R. Eaton, S.S. Eaton and K. Ohno (Eds.), EPR Imaging and In Vivo EPR; CRC Press, Ann Arbor, 1991, Ch. 3.
4. U. Ewert and K.U. Thiessenhusen. In: G.R. Eaton, S.S. Eaton, and K. Ohno (Eds.), EPR Imaging and In Vivo EPR; CRC Press, Ann Arbor, 1991, Ch 11.
5. M. Lucarini, G.F. Pedulli, N. Lelli, and V. Borzatta, Polym. Deg. Stab., submitted for publication.