2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/94558We develop a quantum Lax scheme for IRF models and difference versions of Calogero-Moser-Sutherland models introduced by Ruijsenaars. The construction is in the spirit of the Adler-Kostant-Symes method generalized to the case of face Hopf algebras and elliptic quantum groups with dynamical R-matrices.5 pages, contribution to proceedings of "Quantum Theory and Symmetries" Goslar, 18-22 July 1999Exactly Solvable and Integrable Systemstext