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\bibitem{Peyton_etal1972} Peyton, B. J., Dinardo, A. J., Kanischak, G. M., Arams, F. R., Lange, D. A., \& Sard, E. W. (1972). High-sensitivity receiver for infrared laser communications. \textit{IEEE J. Quantum Electron.}, \textit{QE-8}(2), 252--263.

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