Two-photon absorption in oxazole derivatives: an experimental and quantum chemical study - Silva, D. L.; De Boni, Leonardo; Correa, D. S.; Costa, S. C. S.; Hidalgo, A. A.; Zílio, Sérgio Carlos; Canuto, Sylvio Roberto Accioly; Mendonça, Cleber Renato (Optical Materials, 2012)