2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34206The method of Lagrangians with covariant derivative (MLCD) is applied to a special type of Lagrangian density depending on scalar and vector fields as well as on their first covariant derivatives. The corresponding Euler-Lagrange's equations and energy-momentum tensors are found on the basis of the covariant Noether's identities.10 pages LaTeXGeneral Relativity and Quantum Cosmologytext