Observation of a quasi-1D Mott-Hubbard insulator: The re-entrant - surfaceJ. R. Ahn, N. D. Kim, S. S. Lee, K. D. Lee, B. D. Yu, D. Jeon, K. Kong and J. W. ChungEurophys. Lett., 57 6 (2002) 859-865DOI: https://doi.org/10.1209/epl/i2002-00589-8