Liu, W. B., X. G. Yan, and D. B. Liu. “Optimization of Non-Invasive Prenatal Test Based on Ridge Regression and Turnbull NPMLE”. Advanced Electromagnetics 15, no. 3 (August 21, 2026): 10599–10607. Accessed August 25, 2026. https://www.aemjournal.org/index.php/AEM/article/view/4264.