Analysis of gamma gamma directional correlation data taken with a multi-detector system - Zevallos-Chavez, J Y; Genezini, Frederico Antonio; Zamboni, C B; Cruz, M T F; Martins, Marcos Nogueira; Vanin, Vito Roberto; Guimarães Filho, Zwinglio de Oliveira; Pascholati, Paulo Reginaldo (Review of Scientific Instruments, 2005)