Shilton AN, Powell N, Mara DD, Craggs R. 2008. Solar-powered aeration and disinfection, anaerobic co-digestion, biological CO(2) scrubbing and biofuel production: the energy and carbon management opportunities of waste stabilisation ponds. Water Sci. Technol. 58 (1): 253–258. doi:10.2166/wst.2008.666. ISSN0273-1223. PMID18653962CS1 održavanje: više imena: authors list (link)
Weiss, Werner; Bergmann, Irene; Faninger, Gerhard. Renewables for Heating and Cooling(PDF). International Energy Agency. Inačica izvorne stranice(PDF) arhivirana 29. svibnja 2008. Pristupljeno 26. svibnja 2008.
Apte, J.; i dr. Future Advanced Windows for Zero-Energy Homes(PDF). American Society of Heating, Refrigerating and Air-Conditioning Engineers. Inačica izvorne stranice(PDF) arhivirana 10. travnja 2008. Pristupljeno 9. travnja 2008.Eksplicitna upotreba et al. u: |author= (pomoć)
Shilton AN, Powell N, Mara DD, Craggs R. 2008. Solar-powered aeration and disinfection, anaerobic co-digestion, biological CO(2) scrubbing and biofuel production: the energy and carbon management opportunities of waste stabilisation ponds. Water Sci. Technol. 58 (1): 253–258. doi:10.2166/wst.2008.666. ISSN0273-1223. PMID18653962CS1 održavanje: više imena: authors list (link)
Tadesse I, Isoaho SA, Green FB, Puhakka JA. 2003. Removal of organics and nutrients from tannery effluent by advanced integrated Wastewater Pond Systems technology. Water Sci. Technol. 48 (2): 307–14. PMID14510225CS1 održavanje: više imena: authors list (link)
Apte, J.; i dr. Future Advanced Windows for Zero-Energy Homes(PDF). American Society of Heating, Refrigerating and Air-Conditioning Engineers. Inačica izvorne stranice(PDF) arhivirana 10. travnja 2008. Pristupljeno 9. travnja 2008.Eksplicitna upotreba et al. u: |author= (pomoć)
Weiss, Werner; Bergmann, Irene; Faninger, Gerhard. Renewables for Heating and Cooling(PDF). International Energy Agency. Inačica izvorne stranice(PDF) arhivirana 29. svibnja 2008. Pristupljeno 26. svibnja 2008.
Shilton AN, Powell N, Mara DD, Craggs R. 2008. Solar-powered aeration and disinfection, anaerobic co-digestion, biological CO(2) scrubbing and biofuel production: the energy and carbon management opportunities of waste stabilisation ponds. Water Sci. Technol. 58 (1): 253–258. doi:10.2166/wst.2008.666. ISSN0273-1223. PMID18653962CS1 održavanje: više imena: authors list (link)