Eremets, M. I.; Popov, M. Yu.; Trojan, I. A.; Denisov, V. N.; Boehler, R.; Hemley, R. J. Polymerization of nitrogen in sodium azide. The Journal of Chemical Physics (AIP Publishing). 2004-06-08, 120 (22): 10618–10623. ISSN 0021-9606. doi:10.1063/1.1718250.
Eremets, M. I.; Popov, M. Yu.; Trojan, I. A.; Denisov, V. N.; Boehler, R.; Hemley, R. J. Polymerization of nitrogen in sodium azide. The Journal of Chemical Physics (AIP Publishing). 2004-06-08, 120 (22): 10618–10623. ISSN 0021-9606. doi:10.1063/1.1718250.