Long-term monitoring of the dredged material deposit sites in the Eastern Gulf of FinlandAlexander Chusov, Mikhail Shilin, George Gogoberidze, Nikolai Bobylev, Alexandra Ershova and Julia LednovaE3S Web Conf., 164 (2020) 01010DOI: https://doi.org/10.1051/e3sconf/202016401010