@article{article2006,
  title = {Re-operation for the mechanical valve obstruction with a beating heart technique in an elderly patient with compromised ventricular function},
  author = {Özkan, M. and Biteker, M.},
  journal = {The Anatolian Journal of Cardiology},
  year = {2008},
  volume = {8},
  pages = {462-463},
  doi = {}
}