Eric T. Ahrens, M. Feili-Hariri, H. Xu, G. Genove, and P. A. Morel.
  <b>Receptor-mediated endocytosis of iron-oxide particles
  provides efficient labeling of dendritic cells for in vivo MR imaging</b>.
  <i>Magnetic Resonance in Medicine</i>, 49:1006, 2003.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Ahrens-2003-REI.bib">(bibtex:
  Ahrens-2003-REI)</A>.<br />