1. (1) Y. Enta and S. Takeda : “Silicon Oxynitride Films Grown in Thermally Excited N2O Gas”, IEICE lett., Vol. 87, No. 7, pp. 590-591 (2004) (in Japanese)
2. (2) S. Tokudome, T. Habu, T. Yamamoto, N. Suzuki, Y. Daimo, and T. Shimada : “Experimental Study of N2O/Ethanol Propulsion Systems”, JAXA RR, Vol. 07, No. 027, pp. 1-15 (2008) (in Japanese)
3. (3) Health impact assessment related to determining nitrous oxide as a food additive: Food safety commission of Japan, Cabinet office (2004) (in Japanese)
4. (4) T. Yorozuya : “Nitrous oxide is still useful in current anesthesia practice”, J. Jpn. Soc. Clinical Anesthesia, Vol. 33, No. 5, pp. 730-735 (2013) (in Japanese)
5. (5) T. Yorozuya : “Nitrous Oxide is Still Useful in Current Anesthesia Practice”, J. Jpn. Soc. Clinical Anesthesia, Vol. 33, No. 5 (2013)