Vortex pinning in superconducting Nb thin films deposited on nanoporous alumina templatesW. Vinckx, J. Vanacken, V. V. Moshchalkov, S. Mátéfi-Tempfli, M. Mátéfi-Tempfli, S. Michotte and L. PirauxEur. Phys. J. B, 53 2 (2006) 199-203DOI: https://doi.org/10.1140/epjb/e2006-00358-7