Saeed, Rageh, Eldwin Djajadiwinata, Nader Saleh, Shaker Alaqel, Hany Al-Ansary, Brantley Mills, Flint Pierce, et al. “Opacity Measurement of Particle Curtain of Obstructed Flow Particle Heating Receivers”. SolarPACES Conference Proceedings 3 (November 27, 2025). Accessed January 23, 2026. https://www.tib-op.org/ojs/index.php/solarpaces/article/view/2453.