WASET
Jeon, A. , Kim, I. , Jung, J. , Ye, S. , Kim, J. , Nam, K. , Seoung-wan Baik, S. , Ro, J. , Jeon, G.. "Implementation of the Personal Emergency Response System". World Academy of Science, Engineering and Technology, Open Science Index 6, International Journal of Medical and Health Sciences, (2007), 1(6), 390 - 394.