Onubogu Nneka ObianujuKok-Keong Chong2025-01-022025-01-022017-0510.1016/j.egypro.2017.03.347https://dspace-cris.utar.edu.my/handle/123456789/9809High Acceptance Angle Optical Fiber Based Daylighting System Using Two-stage Reflective Non-imaging Dish Concentratorjournal-article