Relevance of sub-surface chip layers for the lifetime of magnetically trapped atomsB. Zhang, C. Henkel, E. Haller, S. Wildermuth, S. Hofferberth, P. Krüger and J. SchmiedmayerEur. Phys. J. D, 35 1 (2005) 97-104DOI: https://doi.org/10.1140/epjd/e2005-00227-1