2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80900A direct method for calculation of Miura type transformations via LA pair is used for the Boussinesq equation. Quadratic Miura type transformations connected with local weakly-nonlocal (Maltsev-Novikov) Hamiltonian structures. Modified systems are presented.to appear in Journal of Mathematical SciencesExactly Solvable and Integrable Systemstext