Satellite monitoring of cyanobacterial harmful algal bloom frequency in recreational waters and drinking water sources - Clark, John; Schaeffer, Blake A.; Darling, John; Urquhart, Erin; Johnston, John; Ignatius, Amber; Myer, Mark; Loftin, Keith; Werdell, P. Jeremy; Stumpf, Richard P. (Ecological Indicators, 2017)