2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153865In the paper we present a trilinear form and a Darboux-type transformation to an equation considered by Tzitzeica in 1910. This equation equivalent to the Bullough-Dodd-Jiber-Shabat equation. Soliton solutions are constructed by dressing the trivial solution.16 pages (30 Kbytes), standard LaTeX 2.09, run twice to get the right cross-referencesExactly Solvable and Integrable Systemstext