Clock synchronization without exchanging timestamps. - Hayang Kim; Xiaoli Ma (CISS, 2011)

Tracking Low-Precision Clocks With Time-Varying Drifts Using Kalman Filtering. - Hayang Kim; Xiaoli Ma; Benjamin R. Hamilton (IEEE/ACM Trans. Netw., 2012)

Analyzing and Modeling Temporal Patterns of Human Contacts in Cellular Networks. - Hayang Kim; Hui Zang; Xiaoli Ma (ICCCN, 2013)