2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62584This paper can be considered as an extension to our paper [On symplectically harmonic forms on six-dimensional nilmanifolds, Comment. Math. Helv. 76 (2001), n 1, 89-109]. Also, it contains a brief survey of recent results on symplectically harmonic cohomology.18 pagesSymplectic Geometry53D05, 57T15text