Search for charged Higgs bosons: combined results using LEP data ALEPH Collaboration, DELPHI Collaboration, L3 Collaboration, OPAL Collaboration and The LEP working group for Higgs boson searches Eur. Phys. J. C, 73 7 (2013) 2463 Published online: 03 July 2013 DOI: 10.1140/epjc/s10052-013-2463-1