2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20477In this article in the framework of generalized Frolich model we consider electron-spin-phonon system. A parameter of electron-spin-phonon interaction is found. It is shown its interrelation with experiments on isotope-effect on high temperature superconductors and asymptotic transformation to BCS theory.7 pages, 3 figuresSuperconductivityStrongly Correlated Electronstext