BRUNI, M., SHRESTHA, R. and SPUHLER, D.                    
                                            (2018):
                    
                                        https://sswm.info/water-nutrient-cycle/water-purification/hardwares/semi-centralised-drinking-water-treatments/sedimentation-(centralised)
            
        
                
                                    
                                            [Accessed: 09.08.2018]