1. Vymazal, J. (2010). “Constructed wetlands for wastewater treatment.” Water, 2, 530-549.
2. Giæver, H.M. (2003). “Experience and results from the northernmost constructed wetland in Norway.” Mander, Ü., Jenssen, P. (Eds.) Constructed wetlands for wastewater treatment in cold climates, WIT Press Southampton, UK.
3. Mæhlum ,T., and Jenssen, P.D. (2003). “Design and performance of integrated subsurface flowwetlands in a cold climate.” Mander, Ü., Jenssen, P. (Eds.) Constructed wetlands for wastewater treatment in cold climates, WIT Press, Southampton, UK.
4. Tanner, C.C., Clayton, J.S., and Upsdell, M.P. (1995). “Effect of loading rate and planting on treatment of dairy farm wastewaters in constructed wetlands-I. Removal of oxygen demand, suspended solids and fecal coliforms.” Water Res., 29 (1), 17-26.
5. Deblina, G.H., and Gopal, B. (2010). “Effect of hydraulic retention time on the treatment of secondary effluent in a subsurface flow constructed wetland.” Ecological Engineering, 36, 1044-1051.
6. Vymazal, J. (2007). “Removal of nutrients in various types of constructed wetlands.” Science of the Total Environment, 380, 48-65.
7. Drizo, A., Frost, C., and Smith, K. (2000). “Phosphate and ammonium distribution in a pilot-scale constructed wetland with horizontal subsurface flow using shale as a substrate.” Water Res, 34, 2483-2490.
8. He, Q., and Mankin, K. (2002). “Performance variations of COD and nitrogen removal by vegetated submerged bed wetlands.” J. Am. Water Resour. Assoc., 38, 1679-1689.
9. Trang, N., Konnerup, D., Schierup, H., Chiem, N., Tuan, L., and Brix, H. (2010). “Kinetics of pollutant removal from domestic wastewater in a tropical horizontal subsurface flow constructed wetland system: Effects of hydraulic loading rate.” Ecological Engineering, 36, 527-535.
10. Yousefi, Z., and Mohseni, A. (2010). “Nitrogen and phosphorus removal from wastewater by subsurface wetlands planted with Iris pseudacorus.” Ecological Engineering, 36, 777-782.
11. Hamouri, B., Nazih, J., and Lahjouj, J. (2007). “Subsurface-horizontal flow constructed wetland for sewage treatment under Moroccan climate conditions.” Desalination, 215, 153-158.
12. Zhang, D., Tan, S., Richard, M., Sadreddini, S. Zhu, J., and Tuan, N. (2011). “Removal of pharmaceutical compounds in tropical constructed wetlands.” Ecological Engineering, 37, 460-464.
13. Darby, J., Tchobanoglous, G., and Nor, M.A. (1996). “Shallow intermittent sand filtration: Performance evaluation.” The Small Flows J., 2, 3-14.
14. Naylor, S., Brisson, J., Labella, M.A., Drizo, A., and Comeau, Y. (2003) .“Treatment of freshwater fish farm effluent using constructed wetlands: the role of plants and substrate.” Water Science and Technology, 48 (5), 215-222.
15. Sirivedhin, T., and Gray, K.A. (2006). “Factors affecting denitrification rates in experimental wetlands: Field and laboratory studies.” Ecological Engineering, 26, 167-181.
16. Mitsch, W.J. (2005). “Wetland creation, restoration, and conservation: A wetland invitational at the olentangy river wetland research park.” Ecological Engineering, 24 (4), 243-251.
17. Gumbricht, T. (1993). “Nutrient removal processes in freshwater submersed macrophyte pond systems in a temperate climate.” Ecological Engineering, 2, 49-61.
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