2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48724The 2nd order bootstrap relation is discussed in view of the recent critics by F.Fadin, R.Fiore y A.Papa. It is shown that the strong bootstrap condition and the anzatz to solve it used in our earlier paper are valid at least for the quark part of the next-to-leading contribution.8 pages, LatexHigh Energy Physics - Phenomenologytext