1. Alleman JE (2000) The history of fixed-film wastewater treatment systems. Article-biofilmhistory. https://home.engineering.iastate.edu/~jea/w3-class/456/article/article-biofilmhistory.html. Accessed 15 May 2022
2. Areeyaenezhad R, Sarai Tabrizi M, Babazadeh H (2019) Modeling water quality of rivers using QUAL2Kw model (case study: Shahroud River). J Environ Sci Technol 21(7):1–13. https://doi.org/10.22034/jest.2018.30267.3894
3. Astaraie-Imani M, Kapelan Z, Fu G, Butler D (2012) Assessing the combined effects of urbanisation and climate change on the river water quality in an integrated urban wastewater system in the UK. J Environ Manag 112:1–9. https://doi.org/10.1016/j.jenvman.2012.06.039
4. Bates B, Kundzewicz ZW, Wu S, Burkett V, Doell P, Gwary D, Hanson C, Heij B, Jiménez B, Kaser G, Kitoh A, Kovats S, Kumar P, Magadza CHD, Martino D, Mata L, Medany M, Miller K, Arnell N (2008) Climate change and water. Technical paper of the intergovernmental panel on climate change. https://www.ipcc.ch/publication/climate-change-and-water-2/. Accessed 10 July 2022
5. Bowie GL, Laboratory ER, Tech T (1985) Rates, constants, and kinetics formulations in surface water quality modeling, Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency