Thurairajah, Uthayan. “An Elite Roadway Illuminance Calculation (ERIC) Method Provides Optimum Performance and Cost-Saving Without Compromising Safety”. Recent Progress in Science and Technology Vol. 8 (March 27, 2023): 98–119. Accessed June 9, 2026. https://stm.bookpi.org/RPST-V8/article/view/10063.