1.European Investment Bank, 1998, Design Manual for Waste Stabilization Ponds in Mediterranean Countries, Mediterranean Environmental Technical Assistance Program.
2.Extensive waste water treatment process, guide, 2007, Implementation of Council of E.U.
3.Mircea Negulescu - 1985 - Technology & Engineering - 596 pages
4.Planul Judetean de Gestionare a Deseurilor, 2010, Bihor
5.UNEP, 2010, Waste Management: Converting Problems into Opportunities to improve Resource Efficiency
6.International Environmental Technology Centre Division of Technology, Industry and Economics, International Project
7.Wehry A., Bodog M., 2004, Reciclarea apelor uzate, 160 pag. Editura Universitatii din Oradea
8.Prof. Bani, R., Amoatey, P., 2011, Wastewater Management, ResearchGate.
9.Dhote, J., Ingole, S., Chavan, A., 2012, Review on Wastewater Technologies, International Journal for Engineering Research and Technology, Volume 1, Issue 5.
10.Wastewater Report, 2018, International Water Association.
11. Nikore M., Mittal M.; March, 2021; Arresting India’s Water Crisis: The Economic Case for Wastewater Use; Observer Research Foundation
12. Chaturvedi A.; Fixing India’s Sewage Problem; Stanford Social Innovation Review
13. Sugam R. K., Jain A., Neog K.; May, 2017; Rethinking wastewater management in India; The Third Pole
12. Roy S.; February, 2020; Wastewater Generation Treatment- Present Status in India; Indian Infrastructure