Substantial Development Strategy of Land Resource in Zhangjiakou. - Yuqiang Sun 003; Shengchen Wang; Yanna Zhao (CSEE (1), 2011)

Research on Establishing the Early-Warning Index System of Energy Security in China. - Yanna Zhao; Min Zhang; Yuqiang Sun 003 (CSEE (1), 2011)

Study on Traditional Teaching Model Innovation in Network Environment. - Yanna Zhao; Min Zhang; Yuqiang Sun 003 (CSEE (3), 2011)