Yu Jun, ZHU Mao Zhang, WEI GengZen, CHEN Bao Yin, LU Shun Yan, Kang Yunfan, Guo Hai Tao, MA Heng, Dong Mingqing. Vasorelaxing role of vasonatrin peptide in human intramammary artery in vitro. Acta Physiol Sin 2003; 55 (2): (in Chinese with English abstract).