2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17107By this Comment we would like to point out [2] that, though such consideration can be quite sophisticated, the consideration of a spin-pseudo-spin Hamiltonian has nothing in common with the reality. It means that such the consideration are useless as far as the properties of real systems are concerned.2 pages in RevTex, no figureStrongly Correlated Electronstext