1. E. González-Agulla, E. Argones-Rúa, C. García-Mateo, and Ó W. M. Flórez, “Development and Implementation of a Biometric Verification System for E-learning Platforms,” EDUTECH, Computer-Aided Design Meets Computer-Aided Learning, IFIP 18th World Computer Congress, 2004, pp. 155-164.
2. O. Guven, S. Akyokus, M. Uysal, and A. Guven, “Enhanced password authentication through keystroke typing characteristics,” Proceedings of the 25th conference on Proceedings of the 25th IASTED International Multi-Conference: artificial intelligence and applications, 2007, pp. 317-322.
3. D. Kumlander, “Soft Biometrical Students Identification Method for e-Learning,” in Advances in Computer and Information Sciences and Engineering, Springer, Netherlands, 2008, p. 114 - 118
4. A. K. Jain, A. Ross, and S. Prabhakar, "An Introduction to Biometric Recognition,", IEEE Trans. on Circuits and Systems for Video Technology, vol. 14, no. 1, 2004, pp 4-19.
5. A. K. Jain, L. Hong, and S. Pankanti, “Biometric Identification”, Communications of ACM, vol. 43, no.2, 2000, pp. 91-98