Günter Blöschl, Marc F. P. Bierkens, Antonio Chambel, Christophe Cudennec, Georgia Destouni, Aldo Fiori, James W. Kirchner, Jeff J. Mcdonnell, Hubert H. G. Savenije, Murugesu Sivapalan, Christine Stumpp, Elena Toth, Elena Volpi, Gemma Carr, Claire Lupton, Josè Salinas, Borbála Széles, Alberto Viglione, Hafzullah Aksoy, Scott T. Allen, Anam Amin, Vazken Andréassian, Berit Arheimer, Santosh Aryal, Victor Baker, Earl Bardsley, Marlies H. Barendrecht, Alena Bartosova, Okke Batelaan, Wouter R. Berghuijs, Keith Beven, Theresa Blume, Thom Bogaard, Pablo Borges De Amorim, Michael E. Böttcher, Gilles Boulet, Korbinian Breinl, Mitja Brilly, Luca Brocca, Wouter Buytaert, Attilio Castellarin, Andrea Castelletti, Xiaohong Chen, Yangbo Chen, Yuanfang Chen, Peter Chifflard, Pierluigi Claps, Martyn Clark, Adrian Collins, Barry Croke, Annette Dathe, Paula C. David, Felipe P. J. De Barros, Gerrit De Rooij, Giuliano Di Baldassarre, Jessica M. Driscoll, Doris Düthmann, Ravindra Dwivedi, Ebru Eris, William (2019) Twenty-three Unsolved Problems in Hydrology (UPH) – a community perspective, In: HYDROLOGICAL SCIENCES JOURNAL, ISSN: 0262-6667
