Brindha, N., S. Karthikeyan and N. Lalitha, 2007. A comparative study between Business Process Outsourcing (BPO) and Knowledge Process Outsourcing (KPO). J. Manage., 2: 584-592.

Hemalatha, M., V.V. Gomathi and S. Karthikeyan, 2006. An efficient algorithm for predicting survival of medical data. Int. J. Technol. Knowledge Soc., 2: 37-48.
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Karthikeyan, S. and E. Ramaraj, 2006. A design of enhanced security protocol for wireless communication using hybrid encryption technique (AES-rijndael and RSA). Indian J. Comput. Technol., 1: 22-29.

Karthikeyan, S. and E. Ramaraj, 2006. A new type of network security protocol using hybrid encryption in virtual private networking. J. Comput. Sci., 2: 672-675.
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Karthikeyan, S., 2008. An extended MD5 (ExMD5) algorithm for better data integrity. J. Comput. Sci., 2: 584-592.

Karthikeyan, S., E. Ramaraj and M. Hemalatha, 2005. An improvement of security of 802.22 using hybrid encryption (AES-rijndael and RSA). J. Inform. Sci. Technol., 1: 18-26.

Karthikeyan, S., E. Ramaraj and M. Hemalatha, 2006. A new approach of hybrid encryption technique in database security. Int. J. Technol. Knowledge Soc., 2: 55-60.

Karthikeyan, S., E. Ramaraj and M. Hemalatha, 2006. An improvement of Eun-jun-kyung-kee`s remote user authentication scheme in smart card using hybrid encryption. J. Comput. Sci., 1: 293-300.

Karthikeyan, S., E. Ramaraj and M. Hemalatha, 2009. A design of security protocol using hybrid encryption technique (AES-rijndael and RSA). Int. J. Comput. Internet Manage., 17: 78-86.
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Karthikeyan, S., E. Ramaraj and N. Lalitha, 2006. An analysis of key management in transport layer security standard. PCTE J. Comput. Sci., 2: 78-84.

Karthikeyan, S., E. Ramaraj and N. Lalitha, 2006. The new approach of secure protocol in smart card using hybrid encryption technique. ICFAI J. Syst. Manage., 2: 71-75.

Karthikeyan, S., E. Ramaraj and N. Lalitha, 2007. An analysis and improvement of security in wired equivalent privacy (WEP) algorithm using hybrid encryption technique. Int. J. Comput. Sci. Syst. Anal., 1: 75-81.

Karthikeyan, S., M. Hemalatha and E. Ramaraj, 2005. Database search and retrieval system for bacteria. Bioinformatics India J., 3: 37-42.

Karthikeyan, S., M. Hemalatha and V.V. Gomathi, 2005. A data-mining tool to increase human life days from affecting cardiac arrest. Bioinformatics India J., 3: 96-111.

Karthikeyan, S., M. Hemalatha and V.V. Gomathi, 2008. Data mining–knowledge discovery database. Tamil Comput. Magazine, 12: 4-8.

Nagarajan, M. and S. Karthikeyan, 2009. Health condition observation in high level efficiency using an advanced sensor network. CIIT Int. J. Wireless Commun., 1: 183-189.
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Ramaraj, A., N. Laitha and S. Karthikeyan, 2006. An analysis of key management in cryptographic algorithms. Asia J. Inform. Technol., 5: 963-967.
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Shanmugavel, D.P., 2006. Trends in Bioinformatics. In: Microarray in Bioinformatics , Hemalatha, M. and S. Karthikeyan (Eds.). Pointer publishers, Jaipur, India, pp: 212-250.