Developing Fitness Functions for Pleasant Music: Zipf's Law and Interactive Evolution Systems. - Bill Z. Manaris; Penousal Machado; Clayton McCauley; Juan Romero; Dwight Krehbiel (EvoWorkshops, 2005)

Zipf's Law, Music Classification, and Aesthetics. - Bill Z. Manaris; Juan Romero; Penousal Machado; Dwight Krehbiel; Timothy Hirzel; Walter Pharr; Robert B. Davis (Comput. Music. J., 2005)

A Corpus-Based Hybrid Approach to Music Analysis and Composition. - Bill Z. Manaris; Patrick Roos; Penousal Machado; Dwight Krehbiel; Luca Pellicoro; Juan Romero (AAAI, 2007)

Armonique: Experiments in Content-Based Similarity Retrieval using Power-Law Melodic and Timbre Metrics. - Bill Z. Manaris; Dwight Krehbiel; Patrick Roos; Thomas Zalonis (ISMIR, 2008)