• [1]

    . Shultz P J, Lynn K G. Rev. Mod. Phys., 1988, 60: 7012. WANG B Y, CAO X Z, YU R S et al. Mater. Sci. Forum,2004, 445-446: 513-5153. WANG Ping, CAO Xing-Zhong, MA Yan-Yun et al. HEP NP, 2006, 30(10): 1036-1040 (in Chinese)4. MA Yan-Yun, PEI Shi-Lun, CAO Xing-Zhong et al. HEP NP, 2006, 30(2): 166-170 (in Chinese)