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  year={1999},
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}
@Unpublished{wake,
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  year={1999},		   
}		  
@Article{icool,
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  year={1999},
  url={http://www-pat.fnal.gov/muSim/icool.html },
}		  
@Unpublished{BEK1,
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@Unpublished{BEK2,
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}
@Book{ZZ,
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@Article{WW,
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}