%0 Journal Article
%A Yasuo Matsushita
%T Fields of 2-planes and two kinds of almost complex structures on compact 4-dimensional manifolds.
%J Mathematische Zeitschrift
%D 1991
%P 281-292
%V 207
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1991__207_2_174269/
%F MZ_1991__207_2_174269