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@article{MAN_1988__280_3_164393, author = {Yasuo Matsushita}, title = {Fields of {2-Planes} on {Compact} {Simply-Connected} {Smooth} {4-Manifolds.}}, journal = {Mathematische Annalen}, pages = {687--690}, publisher = {mathdoc}, volume = {280}, number = {3}, year = {1988}, zbl = {0628.57016}, url = {http://geodesic.mathdoc.fr/item/MAN_1988__280_3_164393/} }
Yasuo Matsushita. Fields of 2-Planes on Compact Simply-Connected Smooth 4-Manifolds.. Mathematische Annalen, Tome 280 (1988) no. 3, pp. 687-690. http://geodesic.mathdoc.fr/item/MAN_1988__280_3_164393/