Zheng Xing-Wei, Li Jian-Gang, Hu Jian-Sheng, Li Jia-Hong, Cao Bin, Wu Jin-Hua. Investgation of gas puffing and supersonic molecular beam injection density feedback expriments on EASTJ. Acta Physica Sinica, 2013, 62(15): 155202. DOI: 10.7498/aps.62.155202