Grossman, Lisa. Laughing gas is biggest threat to ozone layer. Climate Change. NewScientist - Reed Business Information Ltd. (18:49 28 August 2009). ციტატა: „...nitrous oxide's potential to deplete ozone is comparable to other ozone-depleting substances, called hydroCFCs, ... in the process of being phased out.“ ციტირების თარიღი: 2010-12-27.