Trapping cold neutral atoms with an iron-core electromagnetB. Desruelle, V. Boyer, P. Bouyer, G. Birkl, M. Lécrivain, F. Alves, C. I. Westbrook and A. AspectEur. Phys. J. D, 1 3 (1998) 255-258DOI: https://doi.org/10.1007/s100530050090