1. Andreotti, A., Stoll, W.: Meromorphic functions on complex spaces. Seminaire F. Norguet. In: Lecture Notes in Mathematics, Vol. 409. Berlin, Heidelberg, New York: Springer 1974
2. Cartan, H.: Quotient of complex analytic spaces. Int. Coll. Funct. Theory, Tata Inst. Bombay 1960, 1–15
3. Furishima, M.: On semi-proper equivalence relations on complex spaces. Mem. Fac. Sci., Kyushu Univ. A34, 127–130 (1980)
4. Furishima, M.: Remarks on semi-proper equivalence relations on complex spaces. Mem. Fac. Sci. Kyushu Univ. A34, 351–355 (1980)
5. Grauert, H., Remmert, R.: Komplexe Räume. Math. Ann.136, 245–318 (1958)