Chuanchuan Wang, and Rui Jia. “A Source Signal Recovery Method for Underdetermined Blind Source Separation Based on Shortest Path”. Applied Computational Electromagnetics Society Journal (ACES), vol. 35, no. 4, Apr. 2020, pp. 406-14, https://journals.riverpublishers.com/index.php/ACES/article/view/7889.