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Kean, P. N.; Sinclair, B. D.; Smith, K.; Sibbett, W.; Rowe, C. J.; Reid, D. C. J. (1988). "Experimental evaluation of a fibre Raman oscillator having fibre grating reflectors". J. Mod. Opt. 35 (3): 397–406. Bibcode:1988JMOp...35..397K. doi:10.1080/09500348814550431.