• Brief Communication : mapping river ice using drones and structure from motionAlfredsen, Knut; Haas, Christian; Tuhtan, Jeffrey Andrew; Zinke, PeggyThe cryosphere2018 / p. 627-633 : ill https://doi.org/10.5194/tc-12-627-2018 https://www.scopus.com/sourceid/11700154363 https://www.scopus.com/record/display.uri?eid=2-s2.0-85042535629&origin=inward&txGid=164eabb91d65bea9cdd178db4e807560 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=CRYOSPHERE&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000425729800003