@misc{zhang:patent04,
  title =	 {Feature-Based Composing for {3D} {MR} Angiography
                  Images},
  author =	 {Li Zhang and \textbf{Michal Sofka} and Ulf
                  Sch\"afer},
  howpublished = {Invention Disclosure 2004E13782US filed as
                  a provisional Patent Application 2004P14413US},
  note =	 {Patent holder: Siemens Corporate Research},
  month =	 {24~} # aug,
  year =	 {2004}
}