DFT investigation of the geometrical and electronic structures of C35X (X = B, N and Si) clusters Ding Changgeng, Yang Jinlong, Cui Xiangyuan and Wang Kelin Eur. Phys. J. D, 11 1 (2000) 123-126 Published online: 15 July 2000 DOI: 10.1007/PL00011153