Naresh Babu MM*1, ASN Chakravarthy2 and Cherukuri Ravindranath. “A SECURE BIOMETRICS-BASED USER AUTHENTICATED KEY AGREEMENT PROTOCOL FOR MULTI-SERVER ENVIRONMENTS”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, Apr. 2020, pp. 517-32, http://sersc.org/journals/index.php/IJAST/article/view/13129.