We study four-dimensional almost Kähler manifolds (M,g,J) which admit an opposite almost Kähler structure.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-cm108-1-2, author = {W\l odzimierz Jelonek}, title = {On certain four-dimensional almost K\"ahler manifolds}, journal = {Colloquium Mathematicae}, volume = {107}, year = {2007}, pages = {7-18}, zbl = {1119.53016}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm108-1-2} }
Włodzimierz Jelonek. On certain four-dimensional almost Kähler manifolds. Colloquium Mathematicae, Tome 107 (2007) pp. 7-18. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm108-1-2/