Prof. Armitage - Publications - Lists papers published by Prof. D. H. Armitage of Queens's University (Belfast), mainly concerning harmonic and subharmonic functions.

Potential Theory - Karlin's page, which is a good place to find out who is doing work in potential theory.

Northern Illinois University - Mathematical Atlas - Gives a brief description of potential theory with some indications of textbooks/tutorials and links to other web resources.

Summer Research Semester on Complex Potential Theory - Feza Gursey Institute, Istanbul, Turkey; Summer 1999.