Description  Claims  Cited references 

WO2013126335A1   [0006] 
EP2553067B1   [0007] 
EP2553066B1   [0008] 
EP2553071B1   [0009] 
EP1239024B1   [0010] 
WO9419439A1   [0013] 
US4830771A   [0014] 
EP0420465A2   [0015] 
WO2011120822A1   [0016] 
WO03022967A1   [0017] 
ES2021900A   [0056] 
WO9101295A   [0063]