Liu, Michael C. (2008). "LGS AO science impact: Present and future perspectives". In Hubin, Norbert; Max, Claire E; Wizinowich, Peter L (eds.). Adaptive Optics Systems. Vol. 7015. p. 701508. arXiv:0807.0634. doi:10.1117/12.789766. S2CID119254258.
Liu, Michael C. (2008). "LGS AO science impact: Present and future perspectives". In Hubin, Norbert; Max, Claire E; Wizinowich, Peter L (eds.). Adaptive Optics Systems. Vol. 7015. p. 701508. arXiv:0807.0634. doi:10.1117/12.789766. S2CID119254258.
Liu, Michael C. (2008). "LGS AO science impact: Present and future perspectives". In Hubin, Norbert; Max, Claire E; Wizinowich, Peter L (eds.). Adaptive Optics Systems. Vol. 7015. p. 701508. arXiv:0807.0634. doi:10.1117/12.789766. S2CID119254258.