2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33715The Euler-Lagrange equations of motion for the most general Ricci type gravitational Lagrangians are derived by means of a purely metric formalism.5 pages, latex, contribution to ICGTM "Group23" Dubna 2000General Relativity and Quantum Cosmologytext