Ravishankara, A.R.; Daniel, John S.; Portmann, Robert W. (2009). “Nitrous Oxide (N2O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century”. Science326 (5949): 123-125. doi:10.1126/science.1176985. PMID19713491.
Ravishankara, A.R.; Daniel, John S.; Portmann, Robert W. (2009). “Nitrous Oxide (N2O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century”. Science326 (5949): 123-125. doi:10.1126/science.1176985. PMID19713491.