2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80385Using the symmetry approach, we find a class of integrable nonlinear PDEs with dispersion law $ω(k)=k^{\frac32}$. All these equations turn out to be linearizable by means of a differential parametrization.Submitted to Physics Letters AExactly Solvable and Integrable Systemstext