By year

Zhisheng Niu, Li Zhang, Zhihua Wang, Ming Han, Zhenghe Feng, Zhixing Yang, Youshou Wu, A Demonstration of Broadband Integrated Information Systems based on the High Altitude Platform System in China, Proc. The Fourth International Symposium on Wireless Personal Multimedia Communications, pp. 501-506, 09-12th September 2001, Aalborg, Denmark.
Zhisheng Niu, Song Liu, Stephane Vollet, Zhixing Yang, Youshou Wu, An Integrated ATM System Based on High Altitude Platforms (HAPs), ATM Interact Symposium 2001, pp.243-251, 22-24th August 2001, New Delhi, India.