James R. Claycomb, Applied Electromagnetics (Jones and Bartlett, 2008)

Mary L. Boas, Mathematical Methods in the Physical Sciences, 3rd ed. (Wiley, Hoboken, NJ, 2006)

https://courses.egr.uh.edu/ECE/ECE6382/Class%20Notes/Notes%205%206382%20Conformal%20Mapping.pdf