2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/217471It is shown that the fourth-order parabolic thin film equation with critical absorption admits the large time behaviour, where special logarithmic perturbations enter the standard source-type asymptotics. Such asymptpotic phenomena on existence of logarithmic factors are known for semilinear heat equation with absorption since the 1980s.27 pages, 4 figuresAnalysis of PDEs35K55, 35K40, 35K65text