On the nature of the magnetic transition in a Mott insulatorM. Fleck, A. I. Lichtenstein, M. G. Zacher, W. Hanke and A. M. OleśEur. Phys. J. B, 37 4 (2004) 439-446DOI: https://doi.org/10.1140/epjb/e2004-00079-y