Graph-Theoretical Methods for Detecting and Describing Gestalt Clusters. - Charles T. Zahn (IEEE Trans. Computers, 1971)

Fourier Descriptors for Plane Closed Curves. - Charles T. Zahn; Ralph Z. Roskies (IEEE Trans. Computers, 1972)

Structured control in programming languages. - Charles T. Zahn (ACM SIGPLAN Notices, 1975)