1. Radó, T.: Über den Begriff der Riemannschen Flache, Acta Univ. Szeged 2: 101:12, 1924
2. Kodaira K.: On the cohomology groups of compact analytic varieties with coefficients in some analytic faisceaux. Proc. Nat. Acad. Sci. USA, 39, 865–868, 1953
3. Dolbeault P.: Sur la cohomologie des varietes analytiques complexes, CR Acad. Scie. (Paris), 236, 175–177, 1953
4. Serre J.-P.: Une theoreme de dualite. Comment. Math. Helv. 29, 9–26, 1955
5. Munkres J.: Obstructions to imposing differentiable structures, Notices Amer. Math. Soc. 7, 204. 1960.