@article{GDZPPN000462691,
title = {On the Cohomology Ring of a Simple Hyperk\"ahler Manifold (On the Results of Verbitsky).},
journal = {Geometric and functional analysis},
volume = {6},
year = {1996},
pages = {612-618},
zbl = {0862.53050},
url = {http://dml.mathdoc.fr/item/GDZPPN000462691}
}
Bogomolov, F.A. On the Cohomology Ring of a Simple Hyperkähler Manifold (On the Results of Verbitsky).. Geometric and functional analysis, Tome 6 (1996) pp. 612-618. http://gdmltest.u-ga.fr/item/GDZPPN000462691/