Monitoring aquatic plants: An evaluation of hydroacoustic, on-site digitising and airborne remote sensing techniquesJerom R. Stocks, Michael P. Rodgers, Joe B. Pera and Dean M. GilliganKnowl. Manag. Aquat. Ecosyst., 420 (2019) 27DOI: https://doi.org/10.1051/kmae/2019016