@article{article, title  = {{Measurement and analysis of the reactionγγ→π + π − π + π −}},

 publisher = {{Springer Science and Business Media LLC}},

 url = {{}},

 year = {{1988}},

 month = {{12}},

 author = {{Berger C and Genzel H and Lackas W and Pielorz J and Raupach F and Wagner W and Klovning A and Lillestöl E and Bürger J and Criegee L and Deuter A et al}},

 doi = {{10.1007/bf01624356}},

 volume = {{38}},

 journal = {{Zeitschrift für Physik C Particles and Fields}},

 issue = {{4}},

 pages = {{521-533}},

 note = {{Accessed on 2024/10/23}}}