Observation of the muon inner bremsstrahlung at LEP1 J. Abdallah, P. Abreu, W. Adam, P. Adzic, T. Albrecht, R. Alemany-Fernandez, T. Allmendinger, P. P. Allport, U. Amaldi, N. Amapane et al. (332 more) Eur. Phys. J. C, 57 3 (2008) 499-514 Published online: 11 November 2008 DOI: 10.1140/epjc/s10052-008-0779-z