Structural and electronic properties of Ren (n ≤ 8) clusters by density-functional theory X. J. Feng, T. T. Cao, L. X. Zhao, Y. M. Lei and Y. Luo Eur. Phys. J. D, 50 3 (2008) 285-288 Published online: 05 December 2008 DOI: 10.1140/epjd/e2008-00231-y