1. Acton, L.: 1992, SXT Calibration Note 29. Preliminary calibration of SXT flight X-ray filters.
http://solar.physics.montana.edu/ylegacy/documents/sxt_cal_note/SXT_cal_note_29.pdf
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2. Acton, L.: 1994, Orbital variation of SXT dark current.
http://solar.physics.montana.edu/ylegacy/obs_notes/html/Orbital_Dark_Variation.html
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3. Acton, L.: 1995, Azimuthal & time variation of X-ray scatter.
http://solar.physics.montana.edu/ylegacy/obs_notes/html/Variations_in_xray_scatter.html
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4. Acton, L.: 1996, Orbit variation of CCD dark current.
http://solar.physics.montana.edu/ylegacy/obs_notes/html/FMS_DARKSIGNAL_CHANGE.html
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5. Acton, L.: 1997, Statistical properties of SXT darkframes.
http://solar.physics.montana.edu/ylegacy/obs_notes/html/DARKFRAME_STATISTICS.html
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