White, Henry J.; Gough, David W.; Merry, Richard; Patrick, Stephen (2004). "Demonstration of free-space optical communication link incorporating a closed-loop tracking system for mobile platforms". In Ross, Monte; Scott, Andrew M. (eds.). Advanced Free-Space Optical Communications Techniques and Technologies. Vol. Advanced Free-Space Optical Communications Techniques and Technologies, 119. p. 119. Bibcode:2004SPIE.5614..119W. doi:10.1117/12.578257. S2CID109084571. {{cite book}}: |journal= ignored (help)
White, Henry J.; Gough, David W.; Merry, Richard; Patrick, Stephen (2004). "Demonstration of free-space optical communication link incorporating a closed-loop tracking system for mobile platforms". In Ross, Monte; Scott, Andrew M. (eds.). Advanced Free-Space Optical Communications Techniques and Technologies. Vol. Advanced Free-Space Optical Communications Techniques and Technologies, 119. p. 119. Bibcode:2004SPIE.5614..119W. doi:10.1117/12.578257. S2CID109084571. {{cite book}}: |journal= ignored (help)
White, Henry J.; Gough, David W.; Merry, Richard; Patrick, Stephen (2004). "Demonstration of free-space optical communication link incorporating a closed-loop tracking system for mobile platforms". In Ross, Monte; Scott, Andrew M. (eds.). Advanced Free-Space Optical Communications Techniques and Technologies. Vol. Advanced Free-Space Optical Communications Techniques and Technologies, 119. p. 119. Bibcode:2004SPIE.5614..119W. doi:10.1117/12.578257. S2CID109084571. {{cite book}}: |journal= ignored (help)