Hong Zhang, Xu Qian, Jun Xia & Songhe Song. (2023). Unconditionally Maximum-Principle-Preserving Parametric Integrating Factor Two-Step Runge-Kutta Schemes for Parabolic Sine-Gordon Equations. CSIAM Transactions on Applied Mathematics. 4 (1). 177-224. doi:10.4208/csiam-am.SO-2022-0019