The following publications are possibly variants of this publication:
- Security Vulnerabilities of a Remote User Authentication Scheme Using Smart Cards Suited for a Multi-server EnvironmentYoungsook Lee, Dongho Won. iccsa 2009: 164-172 [doi]
- Efficient nonce-based remote user authentication scheme using smart cardsSung-Woon Lee, Hyun-Sung Kim, Kee-Young Yoo. amc, 167(1):355-361, 2005. [doi]
- An Improvement of Remote User Authentication Scheme Using Smart CardsJun-Cheol Jeon, Byung-Heon Kang, Se-Min Kim, Wan-Soo Lee, Kee-Young Yoo. dmsn 2006: 416-423 [doi]
- An Improved Fingerprint-Based Remote User Authentication Scheme Using Smart CardsYoungkwon Lee, Taekyoung Kwon. iccsa 2006: 915-922 [doi]
- Improved efficient remote user authentication scheme using smart cardsSung-Woon Lee, Hyun-Sung Kim, Kee-Young Yoo. tce, 50(2):565-567, 2004. [doi]
- Comment on "A remote user authentication scheme using smart cards with forward secrecySung-Woon Lee, Hyun-Sung Kim, Kee-Young Yoo. tce, 50(2):576-577, 2004. [doi]