Fast Fault-Tolerant Time Synchronization for Wireless Sensor Networks. - Sunggu Lee; Ungjin Jang; Junyoung Park (ISORC, 2008)

Optimal wake-up scheduling of data gathering trees for wireless sensor networks. - Ungjin Jang; Sunggu Lee; Sungjoo Yoo (J. Parallel Distributed Comput., 2012)