Behavior of excitonic transitions in AlGaAs/GaAs coupled double quantum wells as a function of temperature and excitation power - Lopes, E M; Duarte, J L; Dias, I F L; Poças, L C; Laureto, E; Cesar, D F; Lamas, T. E.; Quivy, Alain André (Encontro Nacional de Física da Matéria Condensada, 2007)