( ) 1) R.J. Young and P.A. Lovell, Introduction to Polymers, 2nd Ed., Nelson Thornes, Cheltenham, (2000)2) Joel R, Fried, Polymer Science and Technology, 2nd Ed., Prentice Hall, New Jersey, (2003)3) Ciência e Tecnologia de Polímeros, C. A. Nieto de Castro, Ed. REPRO 2000, FCUL 20104) L.H. Sperling, Introduction to Physical Polymer Science, 4nd Ed., John Wiley & Sons, Inc., New York (2006)5) J.S.S. Melo, M.J. Moreno, H.G. Burrows, M.H. Gil, Química de Polímeros, Ed. Imprensa da Universidade de Coimbra, Coimbra (2004)6) V.P. Privalko, V.V. Novikov, The Science of Heterogeneous Polymers - Structure and Thermophysical Properties, John Wiley & Sons, Inc., New York (1995)