• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2005.04a
• /
• pp.179-184
• /
• 2005

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2005.04a
• /
• pp.173-178
• /
• 2005

• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2008.11a
• /
• pp.35-36
• /
• 2008

• Journal of Korean Medical Ki-Gong Academy
• /
• v.12 no.1
• /
• pp.151-164
• /
• 2011

• The Korean Nurse
• /
• v.35 no.5
• /
• pp.28-54
• /
• 1997

• Journal of the Korean Mathematical Society
• /
• v.33 no.4
• /
• pp.1101-1114
• /
• 1996

In Riemannian geometry, it is one of the important things to study the topological or geometric invariants of manifolds since they characterize the topology of manifolds.

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2004.10a
• /
• pp.191-196
• /
• 2004

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2004.11a
• /
• pp.158-162
• /
• 2004

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2006.04a
• /
• pp.140-141
• /
• 2006

• Proceedings of the Korea Technology Innovation Society Conference
• /
• 2014.10a
• /
• pp.475-490
• /
• 2014