Kaup, L., Barthel, G., & Kaup, B. (1983). Holomorphic functions of several variables: An introduction to the fundamental theory. Walter de Gruyter.

Kaup, Ludger, Gottfried Barthel, and Burchard Kaup. Holomorphic Functions of Several Variables: An Introduction to the Fundamental Theory. Berlin ; New York: Walter de Gruyter, 1983.

Kaup, Ludger, et al. Holomorphic Functions of Several Variables: An Introduction to the Fundamental Theory. Walter de Gruyter, 1983.