We study four-dimensional almost Kähler manifolds (M,g,J) which satisfy A. Gray's condition (G₃).
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-cm108-1-3, author = {W\l odzimierz Jelonek}, title = {On almost Kahler type (2G3) 4-manifolds}, journal = {Colloquium Mathematicae}, volume = {107}, year = {2007}, pages = {19-29}, zbl = {1127.53027}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm108-1-3} }
Włodzimierz Jelonek. On almost Kähler type (2G₃) 4-manifolds. Colloquium Mathematicae, Tome 107 (2007) pp. 19-29. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm108-1-3/