Klehr, A.; Wenzel, H.; Brox, O.; Erbert, G.; Nguyen, T-P.; Trankle, G. (2009). Belyanin, Alexey A.; Smowton, Peter M. (eds.). "High power DFB lasers for D1 and D2 rubidium absorption spectroscopy and atomic clocks". Proc. SPIE. Novel In-Plane Semiconductor Lasers VIII. 7230: 72301I-1–8. Bibcode:2009SPIE.7230E..1IK. doi:10.1117/12.805858.
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Klehr, A.; Wenzel, H.; Brox, O.; Erbert, G.; Nguyen, T-P.; Trankle, G. (2009). Belyanin, Alexey A.; Smowton, Peter M. (eds.). "High power DFB lasers for D1 and D2 rubidium absorption spectroscopy and atomic clocks". Proc. SPIE. Novel In-Plane Semiconductor Lasers VIII. 7230: 72301I-1–8. Bibcode:2009SPIE.7230E..1IK. doi:10.1117/12.805858.
