1. Braun, A., Cerrato, L.: Estimating speaker age across languages. In: Proceedings of ICPhS 1999, San Francisco, CA, pp. 1369–1372 (1999)
2. Brückl, M., Sendlmeier, W.: Aging female voices: An acoustic and perceptive analysis. Institut für Sprache und Kommunikation, Technische Universität, Berlin, Germany. Voqual 2003, Geneva (August 27-29, 2003)
3. Cerrato, L., Falcone, M., Paoloni, A.: Subjective age estimation of telephonic voices. Speech Communication 31, 107–112 (2000)
4. Dehon, H., Bredart, S.: An ‘other-race’ effect in age estimation from faces. Perception 26(9), 1107–1113 (2001)
5. George, P., Hole, G.: Factors influencing the accuracy of age estimations of unfamiliar faces. Perception 24(9), 1059–1073 (1995)