  Multi-periodic pulsation phenomena of ZZ Ceti variable stars are analyzed
within the context of a fractal cosmological paradigm that emphasizes discrete
self-similarity in nature. A quantitative test comparing relevant stellar and
atomic periods provides preliminary support for the analysis. This paper
completes a 3-part series that explores the possibility of discrete
cosmological self-similarity in variable stars; the first and second papers
discussed RR Lyrae and delta Scuti stars, respectively.
