Transnational FerryBox monitoring in the Baltic Sea : common measures for quality assuranceSeppälä, Jukka; Maunula, Petri; Haavisto, Noora; Rehder, Gregor; Karlson, Bengt; Willstrand Wranne, Anna; Lips, Urmas; Kikas, Villu; Jaanus, Andres; London. Lauri; Laakso, LauriIEEE International Workshop on Metrology for the Sea ; Learning to Measure Sea Health Parameters (MetroSea)2021 / p. 121-125 https://doi.org/10.1109/MetroSea52177.2021.9611608