1. A Generic Fitter Project for HEP Model Testing. http://project-gfitter.web.cern.ch/project-gfitter/
2. The Gfitter Group., J. Haller, A. Hoecker, et al., Update of the global electroweak fit and constraints on two-Higgs-doublet models. Eur. Phys. J. C 78, 675 (2018)
3. The ALEPH, DELPHI, L3, OPAL Collaborations, the LEP Electroweak Working Group, Electroweak measurements in electron-positron collisions at W-Boson-pair energies at LEP. Phys. Rep. 532, 119 (2013)
4. The ALEPH, DELPHI, L3, OPAL, SLD Collaborations, the LEP Electroweak Working Group, the SLD Electroweak and Heavy Flavour Groups, Precision electroweak measurements on the Z resonance. Phys. Rep. 427, 257 (2006)
5. The LEP Electroweak Working Group. http://lepewwg.web.cern.ch/LEPEWWG/