2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81059The Lax representation and Backlund transformations for the systems similar to WZNW (Wess-Zumino-Novicov-Witten) systems and non-abelian affine Toda models are obtained in present paper. One of these systems is a new integrable extension of well known sine-Gordon equation.21 pagesExactly Solvable and Integrable Systemstext