Zhang, Zihua, Huaan Zhang, Su Zhang, and Zhiying Zhong. “Superluminal Propagation of Pulse As Another Ultra-Fast Phenomenon, And Its Application”. Engineering And Technology Journal 6, no. 12 (December 1, 2021): 1071–1075. Accessed November 23, 2024. https://everant.org/index.php/etj/article/view/553.