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DE102008018586A1   [0004] 
EP1470747B1   [0005] 
EP0906011A2   [0006] 
WO02054480A1   [0007] 
US4619043A   [0008] 
JP2193813A   [0009] 
US6079284A   [0010] 
JP2001074664A   [0011] 
JP1193630A   [0011] 
US5750979A   [0011] 
WO8504385A1   [0011] 
DE19913134A1   [0011] 
JP8227904A   [0011] 
WO03058708A1   [0012] 
US5249356A   [0012] 
EP1802192A1   [0013] 
US2004036041A1   [0013]