1. LHCb Technical Proposal, CERN/LHCC 998-4.
2. O. Steinkamp, Layout of a cross-shaped inner tracker, LHCb-2001-114.
3. F. Lehner, et al., Description and characterization of inner tracker silicon prototype sensors, LHCb-2001-036.
4. C. Bauer, et al., Test beam results on inner tracker silicon prototype sensors, LHCb-2001-135.
5. http://wwwasic.kip.uni-heidelberg.de/trunk/projects/Helix/.