Emergence of solitonic structures in hierarchical Korteweg–de Vries SystemsSalupere, Andrus; Lints, Martin; Illison, LauriApplied wave mathematics II : selected topics in solids, fluids, and mathematical methods and complexity2019 / p. 89-124 https://doi.org/10.1007/978-3-030-29951-4_5 https://www.ester.ee/record=b5303400*est