pubmed-article:16578872 | pubmed:affiliation | Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439; Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK, Canada S7N 5E2; and Department of Physics, University of Notre Dame, Notre Dame, IN 46556-5670. | lld:pubmed |