In this paper, we give a more elegant and systematic proof of Jacobowitz’s theorem which relates complex vector fields and the topology of the underlying manifold. The method we use is due to Atiyah Vector fields on manifolds (English, with French and German summaries), Westdeutscher Verlag, Cologne, 1970, who applied it to the study of real vector fields and characteristic numbers.
Mengge Hu (Thu,) studied this question.