Vortex plasma and transport in superconducting films with magnetic dots D. E. Feldman, I. F. Lyuksyutov, V. L. Pokrovsky and V. M. Vinokur Europhys. Lett., 51 4 (2000) 476 Published online: 01 September 2002 DOI: 10.1209/epl/i2000-00519-4