@ARTICLE{blum2008jcarsWorkflow,
  author = {Tobias Blum and Nicolas Padoy and Hubertus Feußner and Nassir Navab},
  title = {Workflow Mining for Visualization and Analysis of Surgeries},
  journal = {International Journal of Computer Assisted Radiology and Surgery},
  year = {2008},
  volume = {3},
  number = {5},
  pages = {379-386},
  doi = {10.1007/s11548-008-0239-0}
}