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The Sasa–Satsuma equation with high-order discrete spectra in space-time solitonic regions: soliton resolution via the mixed $\bar{\partial }$-Riemann–Hilbert problem
Minghe Zhang, Zhenya Yan
Communications in Theoretical Physics . 2024, (6): 65002 .  DOI: 10.1088/1572-9494/ad361b