1. B. Gittelman et al., The Z0 factory, Proc. of the 1982 DPF Summer Study on Elementary particle physics and future facilities, Snowmass, Colorado, ed. by R. Donaldson, R. Gustafson, and F. Paige
2. e+e- physics at petra—the first five years
3. R.H. Siemann, Mass and width of the Z0 in e+e− annihilation, in the same proceedings as ref. [2]