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APA Citation
Pietralla, N., Walz, C., Scheit, H., Aumann, T., Lefol, R., & Ponomarev, V. Y. (2016). first observation of the competitive double-gamma (γγ/γ) decay process. Journal of physics, 724, . http://access.bl.uk/ark:/81055/vdc_100115862269.0x00001b