Operational wave height monitoring using navigation buoys and marine radars in the Baltic Sea [Online resource]Kõuts, Tarmo; Rikka, Sander; Käärmann, Leo; Usk, AivarInternational Conference Operational Oceanography Serving Sustainable Marine Development : 3-5 October 2017, Bergen, Norway : book of abstracts2017 / p. 21 http://eurogoos.imr.no/resources/EuroGOOS_Conference_2017_BoA.pdf

Operational wave height monitoring using navigation buoys and marine radars in the Baltic Sea [Online resource]Kõuts, Tarmo; Rikka, Sander; Käärmann, Leo; Usk, AivarOperational oceanography serving sustainable marine development : Proceedings of the Eigth EuroGOOS International Conference, 3-5 October 2017, Bergen, Norway2018 / p. 157-163 : ill http://eurogoos.eu/download/publications/EuroGOOS-2017-Conference-Proceedings.pdf