Helnwein, Peter, et al. “Ab Initio Estimates of Stability Limits on Nonlinear Load-Displacement Paths: Potential and Limitations”. Computer Assisted Methods in Engineering and Science, vol. 6, no. 3-4, Apr. 2023, pp. 345-60, https://cames3.ippt.pan.pl/index.php/cames/article/view/1282.