Chen, Kui Fu, Qiang Zhang, and Sen Wen Zhang. “A Time-Step Insensitive Recurrent Approach to Analyze Non-Stationary Random Responses”. Computer Assisted Methods in Engineering and Science 16, no. 1 (March 31, 2009): 1–9. Accessed February 23, 2026. https://cames.ippt.pan.pl/index.php/cames/article/view/159.