FerryBoxes within Europe : state-of-the-art and integration in the European Ocean Observation System (EOOS) [Online resource]Petersen, W.; Colijn, F.; Gorringe, P.; Kaitala, S.; Karlson, B.; King, A.; Lips, UrmasOperational oceanography serving sustainable marine development : proceedings of the Eigth EuroGOOS International Conference, 3-5 October 2017, Bergen, Norway2018 / p. 63-70 : ill http://eurogoos.eu/download/publications/EuroGOOS-2017-Conference-Proceedings.pdf