2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107249In the last year four new parametrizations of the Hadronic Photon Structure Function at Next to Leading Order have appeared. In this talk, I briefly review the main features of three of them: the FFNS_CJK, CJK and AFG.7 pages, 2 figures. Talk presented at the Photon 2005 Conference, Warsaw (Poland)High Energy Physics - Phenomenologytext