@article {Abreu:1994ria,
	title = {{A Study of radiative muon pair events at $Z^0$ energies and limits on an additional $Z^\prime$ gauge boson}},
	journal = {Z. Phys.},
	volume = {C65},
	year = {1995},
	pages = {603-618},
	doi = {10.1007/BF01578669},
	author = {Abreu, P. and others}
}
