1. Medvedev V.V. (2012). Monitoring of soils in Ukraine. Concept. Results. Tasks. Kharkov. [In Russian]. [Медведев В.В. Мониторинг почв Украины. Концепция. Итоги. Задачи. (2-ое пересмотренное и дополненное издание). Харьков», 2012. 536 с.]
2. Abbaspour K.C. (2007). User manual for SWAT-CUP, SWAT calibration and uncertainty analysis programs. Swiss Federal Institute of Aquatic Science and Technology (Eawag), Duebendorf, Switzerland.
3. American Society of Civil Engineers (ASCE) Task Committee on Definition of Criteria for Evaluation of Watershed Models, Irrigation and Drainage Division (1993). Criteria for evaluation of watershed models. J. Irrigation Drainage Eng., 119(3), 429-442.
7. Dodds W. (2006). Eutrophication and trophic state in rivers and streams. Limnol Oceanogr, 51, 671–680.
8. European Environment Agency. (2015). The European environment — state and outlook 2015: synthesis report. Copenhagen, Denmark.
10. Gupta, H.V., Sorooshian, S., Yapo, P.O. (1999). Status of automatic calibration for hydrologic models: comparison with multilevel expert calibration. Journal of Hydrological Engineering, 4(2), 135 – 143.
12. Malago A., Venhor M., Gericke A., Vigiak O., Bouraoui F., Grizzetti B., Kovacs A. (2015). Modelling nutrient pollution in the Danube River Basin: a comparative study of SWAT, MONERIS and GREEN models. Joint Research Centre technical reports, JRC99193. http//doi. org 10.2788/156278
13. Moriasi D.N., Arnold J.G., Van Liew M.W., Bingner R.L., Harmel R.D., Veith T.L. (2007). Model evaluation guidelines for systematic quantification of accuracy in watershed simulations. Am. Soc. Agric. Biol. Eng., 50 (3), 885 –900.
14. Nash J. E., Sutcliffe J. V. (1970). River flow forecasting through conceptual models: Part 1. A discussion of principles. J. Hydrology, 10(3), 282-290.
15. Szolgayova E., Parajka J., Blöschl G., Bucher C. (2014). Long term variability of the Danube River flow and its relation to precipitation and air temperature. Journal of Hydrology, 519, 871-880. URL:
http://dx.doi.org/10.1016/j.jhydrol.2014.07.047
17. United States Environmental Protection Agency. (2005). Total Maximum Daily Loads Model Evaluation and Research Needs. 600/R-05/149.
18. Wellen C., Kamran-Disfani A.-R., Arhonditsis G.B. (2015). Evaluation of the current state of distributed watershed nutrient water quality modeling. Environ. Sci. Technol, 49, 3278−3290.