@article{GDZPPN002318776, title = {Compact Differentiable 4-Folds with Quaternionic Structures.}, journal = {Mathematische Annalen}, volume = {250}, year = {1980}, pages = {79-96}, zbl = {0411.57024}, url = {http://dml.mathdoc.fr/item/GDZPPN002318776} }
Kato, Ma. Compact Differentiable 4-Folds with Quaternionic Structures.. Mathematische Annalen, Tome 250 (1980) pp. 79-96. http://gdmltest.u-ga.fr/item/GDZPPN002318776/