The Portfolio Selection Model of Oil/Gas Projects Based on Real Option Theory. - Zefu Lin; Jianyue Ji (International Conference on Computational Science (3), 2007)

Causality and Impulse Response on the Relationship between Energy Consumption and Environmental Pollution—-A Case Study of Qingdao City. - Jianyue Ji; Xiaoli Yu; Yanqing Liu (CSO (2), 2009)