On the Integration of the Dullin–Gottwald–Holm Equation with a Self-Consistent Source in the Class of Rapidly Decreasing Functions. Eur. J. Pure Appl. Math. [Internet]. 2026 Feb. 16 [cited 2026 Feb. 23];19(1):6675. Available from: https://www.ejpam.com/ejpam/article/view/6675