Density functional theory study of the carbon chains CnX, CnX+ and CnX- (X = O and Se; n = 1–10)A. Bundhun and P. RamasamiEur. Phys. J. D, 57 3 (2010) 355-364DOI: https://doi.org/10.1140/epjd/e2010-00069-8