NLO QED corrections to ISR in e+ e- annihilation and the measurement of using tagged photons G. Rodrigo, A. Gehrmann-De Ridder, M. Guilleaume and J.H. Kühn Eur. Phys. J. C, 22 1 (2001) 81-88 Published online: 05 October 2001 DOI: 10.1007/s100520100784