Lifetime measurements of some levels belonging to the 3p5nd (n = 4, 5, 6, 7) configuration of ArI M. B. Das and S. Karmakar Eur. Phys. J. D, 23 2 (2003) 229-231 Published online: 24 April 2003 DOI: 10.1140/epjd/e2003-00078-8