Perception of Concurrent Timbres and Implications for Orchestration. - Gregory J. Sandell (ICMC, 1989)

A Library of Orchestral Instrument Spectra. - Gregory J. Sandell (ICMC, 1991)

Prototyping and Interpolation of Multiple Musical Timbres Using Principle Component-Based Synthesis. - Gregory J. Sandell; William L. Martens (ICMC, 1992)