Isotopic dependence of the fusion and cross section in the systems 'ANTPOT.16,18 O''+''ANTPOT.63,65 CU' - Chamon, Luiz Carlos; Pereira, D; Rossi, E. S.; Silva, C P; Rezeto, G R; Borges, A M; Gomes, L C; Sala, Oscar (Physics Letters B, 1992)