1. Opening transients and the quality of classical guitars;Jaroszewski;Archives of Acoustics,1978
2. Fundamentals of the guitar tone;Jansson;Journal of Guitar Acoustics,1982
3. Orduña-Bustamante F. Relación entre la calidad subjectiva y algunos parámetros acústicos de la guitarra clásica. Tesis de licenciatura, Universidad Nacional Autónoma de México, March 1987.
4. Experiments on the relation between acoustical properties and the subjective quality of classical guitars;Orduña-Bustamante;Journal of the Catgut Acoustical Society (Series II),1992
5. The theory of string resonances on musical instruments;Gough;Acustica,1981