GIS Web Service Using Context Information in Mobile Environments. - Xun Li; Woochul Shin; Li Li; Sang Yoo (ICCSA (1), 2006)

Intelligent Secure Web Service Using Context Information. - Woochul Shin; Xun Li; Sang Bong Yoo (KES (3), 2006)

Secured Web Services Based on Extended Usage Control. - Woochul Shin; Sang Bong Yoo (PAKDD Workshops, 2007)

Access Control of RFID Middleware Using Extended Usage Control Model. - Woochul Shin; Xun Li; Sang Bong Yoo (FGCN (2), 2008)