1. Technical and engineering challenges for the future of radio astronomy;Ruf;The Radio Sci. Bull.,1999
2. http://www.ras.ucalgary.ca/SKA
3. Nan RD. A proposal of international LT (SKA) program, Beijing Astronomical Observatory, Beijing, China, 1996
4. Science in China;Mervis;Science,1995
5. A proposal for the second Arecibo upgrading program, National Astronomy and Ionosphere Center, USA, March 1986