-
[1]
. Baehr J.et al.Precision Measurement of the Cosmic Ray Muon Momentum Spectrum Between 20 and 2000 GeV/c,July 1996,L3 internal Note No.1977 2. L3 Collab.Nucl.Instr.And Meth.,1990,A289;35 3. LIU Zhen-An,CHEN Guo-Ming et al.High Energy Phys.and Nucle.Phys.,1998,22:990(in Chinese)(刘振安,陈国明等.高能物理与核物理,1998,22:900) 4. CHEN Guo-Ming,CHEN Gang.High Energy Phys.and Nucl.Phys.,1995,19:692(in Chinese)(陈国明,刚.物理与核物理，1995,19:692)