1. Twelve-tone invariants as compositional determinants;Babbitt;The Musical Quarterly,1960
2. The structure and function of musical theory;Babbitt,1965
3. Note on Neu's review of the literature on absolute pitch;Bachem;Psychological Bulletin,1948
4. Time factors in relative and absolute pitch determination;Bachem;Journal of the Acoustical Society of America,1954
5. Memory for absolute pitch: Studies in psychology;Baird,1917