2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51316A covariant quantization method for physical systems with reducible constraints is presented.4 pages, XIX International Colloquium in Group Theoretical Methods in Physics, Salamanca, Spain, 1992High Energy Physics - TheoryGauge invariant formulation of systems with second class constraintstext