Wulder, Michael A.; Loveland, Thomas R.; Roy, David P.; Crawford, Christopher J.; Masek, Jeffrey G.; Woodcock, Curtis E.; Allen, Richard G.; Anderson, Martha C.; Belward, Alan S.; Cohen, Warren B.; Dwyer, John; Erb, Angela; Gao, Feng; Griffiths, Patrick; Helder, Dennis; Hermosilla, Txomin; Hipple, James D.; Hostert, Patrick; Hughes, M. Joseph; Huntington, Justin; Johnson, David M.; Kennedy, Robert; Kilic, Ayse; Li, Zhan; Lymburner, Leo; McCorkel, Joel; Pahlevan, Nima; Scambos, Theodore A.; Schaaf, Crystal; Schott, John R.; Sheng, Yongwei; Storey, James; Vermote, Eric; Vogelmann, James; White, Joanne C.; Wynne, Randolph H.; Zhu, Zhe (2019). "Current status of Landsat program, science, and applications". Remote Sensing of Environment. 225. Elsevier BV: 127–147. Bibcode:2019RSEnv.225..127W. doi:10.1016/j.rse.2019.02.015. hdl:10919/88790. ISSN0034-4257. S2CID134722096.
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Wulder, Michael A.; Loveland, Thomas R.; Roy, David P.; Crawford, Christopher J.; Masek, Jeffrey G.; Woodcock, Curtis E.; Allen, Richard G.; Anderson, Martha C.; Belward, Alan S.; Cohen, Warren B.; Dwyer, John; Erb, Angela; Gao, Feng; Griffiths, Patrick; Helder, Dennis; Hermosilla, Txomin; Hipple, James D.; Hostert, Patrick; Hughes, M. Joseph; Huntington, Justin; Johnson, David M.; Kennedy, Robert; Kilic, Ayse; Li, Zhan; Lymburner, Leo; McCorkel, Joel; Pahlevan, Nima; Scambos, Theodore A.; Schaaf, Crystal; Schott, John R.; Sheng, Yongwei; Storey, James; Vermote, Eric; Vogelmann, James; White, Joanne C.; Wynne, Randolph H.; Zhu, Zhe (2019). "Current status of Landsat program, science, and applications". Remote Sensing of Environment. 225. Elsevier BV: 127–147. Bibcode:2019RSEnv.225..127W. doi:10.1016/j.rse.2019.02.015. hdl:10919/88790. ISSN0034-4257. S2CID134722096.
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"Presidential Directive 54"(PDF). jimmycarterlibrary.gov. Jimmy Carter Library. 16 November 1979. Archived from the original(PDF) on 30 January 2017. Retrieved 18 April 2017. This article incorporates text from this source, which is in the public domain.
"Landsat 9". NASA Landsat Science. Archived from the original on 9 November 2016. Retrieved 21 December 2016. This article incorporates text from this source, which is in the public domain.