2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105131In this note we fill a gap in the proof of the main theorem (Theorem 1.2) of our paper 'Surfaces in 4-manifolds', Math. Res. Letters 4 (1997), 907-914.2 pagesGeometric Topology57R57Surfaces in 4-manifolds: Addendumtext