1. M. Jimbo, T. Miwa, and K. Ueno, Phys. D, 2, 306–352 (1981).
2. B. Malgrange, “Sur les déformations isomonodromiques: I. Singularités régulières,” in: Mathématique et physique (Progr. Math., Vol. 37, L. B. de Monvel, A. Douady, and J.-L. Verdier, eds.), Birkhäuser, Boston, Mass. (1983), pp. 401–426.
3. F. W. Warner, Foundations of Differentiable Manifolds and Lie Groups (Grad. Texts Math., Vol. 94), Springer, New York (1983).
4. S. Kobayashi, Differential Geometry of Complex Vector Bundles (Publ. Math. Soc. Japan, Vol. 15), Princeton Univ. Press, Princeton, N. J. (1987).
5. R. Gunning and H. Rossi, Analytic Functions of Several Complex Variables, Prentice-Hall, New York (1965).