* National Pollutant Inventory – Oxide of nitrogen fact sheet* National Institute for Occupational Safety and Health – Nitrous Oxide* Nitrous Oxide FAQ* Erowid article on Nitrous Oxide* Nitrous oxide fingered as monster ozone slayer, Science News* Dental Fear Central article on the use of nitrous oxide in dentistry
* National Pollutant Inventory – Oxide of nitrogen fact sheet* National Institute for Occupational Safety and Health – Nitrous Oxide* CDC – NIOSH Pocket Guide to Chemical Hazards – Nitrous Oxide* Nitrous Oxide FAQ* Erowid article on Nitrous Oxide* Nitrous oxide fingered as monster ozone slayer, Science News* Dental Fear Central article on the use of nitrous oxide in dentistry