K. Pecora and S. R. Choudhury, “Partially Integrable ℘ T -Symmetric Hierarchies of the KdV and Burgers’ Equations in (1+1) and (2+1)”, DNC, vol. 6, no. 2, pp. 113–146, Aug. 2026, doi: 10.5890/DNC.2017.06.002.