1. A. V. Bitsadze, Fundamentals of the Theory of Analytical Functions of a Complex Variable (Nauka, Moscow, 1972) [in Russian].
2. S. Bochner and W. T. Martin, Functions of Several Complex Variables (Princeton Univ. Press, Princeton, N.J., 1948).
3. V. S. Vladimirov, Methods of the Theory of Functions of Many Complex Variables (Nauka, Moscow, 1964
4. MIT Press, Cambridge, Mass., 1966).
5. R. C. Gunning and H. Rossi, Analytic Functions of Several Complex Variables (Am. Math. Soc., Providence, R.I., 1965).