N.B. Singh; D.R. Suhre; V. Balakrishna; M. Marable*; R. Meyer*; N. Fernelius; F.K. Hopkins; D. Zelmon (1998). "Far-infrared conversion materials: Gallium selenide for far-infrared conversion applications". Progress in Crystal Growth and Characterization of Materials. 37 (1): 47–102. doi:10.1016/S0960-8974(98)00013-8.