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APA Citation
Slussarenko, S., Weston, M., Chrzanowski, H., Shalm, L., Verma, V., Nam, S., & Pryde, G. (2017). unconditional violation of the shot-noise limit in photonic quantum metrology. Nature photonics, 11(11), 700–703. http://access.bl.uk/ark:/81055/vdc_100084758608.0x000153