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Liebold, F ; Maas, H.-G ; Heravi, A. A ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/archives.aspx -- 2194-9034.
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Liebold, F ; Maas, H.-G ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences -- ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/annals.aspx -- 2194-9050.
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Liebold, F ; Maas, H.-G ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/archives.aspx -- 2194-9034.
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F. Liebold ; R. Lorenzoni ; I. Curosu... https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B2-2021/533/2021/isprs-archives-XLIII-B2-2021-533-2021.pdf.
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F. Liebold ; H.-G. Maas ; A. A. Heravi https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2-W18/107/2019/isprs-archives-XLII-2-W18-107-2019.pdf.
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