Anisotropy of the upper critical field in MgB2: the two-gap Ginzburg-Landau theory V. H. Dao and M. E. Zhitomirsky Eur. Phys. J. B, 44 2 (2005) 183-188 Published online: 20 April 2005 DOI: 10.1140/epjb/e2005-00113-8