NBS [Nature-based solutions] for managing water-related risk, variability and change - Smakhtin, Vladimir U.; Nagabhatla, N.; Qadir, Manzoor; Guppy, L.; Burek, P.; Villholth, Karen G.; McCartney, Matthew P.; Pavelic, Paul; Tsegai, D.; Fedotova, T.; Teruggi, G. (2018)