Prediction of a novel monoclinic carbon allotropeMaximilian Amsler, José A. Flores-Livas, Miguel A.L. Marques, Silvana Botti and Stefan GoedeckerEur. Phys. J. B, 86 9 (2013) 383DOI: https://doi.org/10.1140/epjb/e2013-40639-4