2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2907Modeling planetary nebulae (PNe) shells using different ionizing spectra for a hot central star (CSPN) of evolved PNe, we found that especially a blackbody model leads to wrong nebular diagnostics and abundances.1 page; Proceedings of the Symposium "Ionized Gaseous Nebulae", Mexico City, 21-24 November 2000; RevMexAA (Ser. de Conf.), in pressAstrophysicstext