Brouwer, R., Bliem, M., Getzner, M., Kerekes, S., Milton, S., Palarie, T., Szerényi, Z., Vadineanu, A., & Wagtendonk, A. (2016). Valuation and transferability of the non-market benefits of riverrestoration in the Danube river basin using a choice experiment. Ecological Engineering, 87, 20–29. https://doi.org/10.1016/j.ecoleng.2015.11.018