2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47361Bethe-Salpeter approach has been applied to the study of b --> c transitions both for heavy mesons and heavy baryons. Meson and baryon IW functions are calculated on the equal footing. A reasonable agreement with the experimental data for heavy to heavy semileptonic transitions has been obtained.4 pages, LaTeX-file, Talk given at the IV International Workshop on Progress in Heavy Quark Physics, Rostock, September 20-22, 1997High Energy Physics - Phenomenologytext