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{{cite web |url=https://marcus.uib.no/instance/reference/ab7db10ee4a7526aa8d3cf6adfd122437da23d39 |title=ubb-kk-n-240-005: Hundre elektriske år... (s. 59) |author=Avdeling for spesialsamlinger |accessdate=Sun Oct 06, 2024 |publisher=University of Bergen Library}}