1. Bargiela A., Pedrycz W., 2006. The roots of granular computing. In: IEEE International Conference on Granular Computing (GrC), pp. 806–809.
2. Aplicación de las redes neuronales de compresión a la extracción de características para el reconocimiento a partir de imágenes de la oreja;Carreira,1995
3. Database Ear Recognition Laboratory from the University of Science & Technology Beijing (USTB). Found on the Web page: 〈http://www1.ustb.edu.cn/resb/en/index.htm〉 (accessed August 5, 2013).
4. High confidence visual recognition of persons by a test of statistical independence;Daugman;IEEE Transactions on Pattern Analysis and Machine Intelligence,1993
5. Gaxiola F., Melin P., Valdez F., Castillo O., 2012. Neural network with type-2 fuzzy weights adjustment for pattern recognition of the human iris biometrics. In: Mexican International Conference on Artificial Intelligence, vol. 2, pp. 259–270.