Chao, Y., X. Yihang, and L. Min. “Parameters Optimization and Simulation of Highway Tunnel Offset-of-Vault Lamp Distribution Lighting With LED”. Indian Journal of Power and River Valley Development, vol. 72, no. 9&10, Oct. 2022, pp. 167-72, http://informaticsjournals.com/index.php/ijprvd/article/view/31339.