2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42146We describe the formation of solitons in NJL-type models and discuss the influence of the regularization scheme on the stability of the solution. We concentrate on models with non-local regulators in which stable solutions exist without introducing additional constraints.Invited talk at the XVIII European Conference on Few-Body Problems in Physics, September 8-14, Bled, Slovenia, to be published in Few-Body Systems, Supplement, 6 pages LaTeXHigh Energy Physics - Phenomenologytext