2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40766We describe how the non-local regularization can be implemented in the calculation of solitons in the Nambu Jona-Lasinio model as well as in the equivalent linear sigma-model. We investigate different forms of regulators and show that the 3-momentum cut-off leads to serious conceptual difficulties.11 pages, 6 Postscript figures, plain LaTeX, talk presented at the Mini-Workshop on ``Hadrons as Solitons'', Bled, Slovenia, 6-17 July 1999High Energy Physics - Phenomenologytext