%0 Journal Article %A Yasuo Matsushita %T Equivalence classes of Fields of 2-planes and two kinds of almost complex structures on compact four-dimensional manifolds. %J Manuscripta mathematica %D 1995 %P 409-416 %V 88 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1995__88_1_156135/ %F MM2_1995__88_1_156135