@article{anthony l. kovac2009of,
  title={Comparison of remifentanil versus fentanyl general anesthesia for short outpatient urologic procedures},
  author={anthony l. kovac,karri l. summers},
  journal={Signa Vitae},
  volume={4},
  number={2},
  pages={23--29},
  doi = {10.22514/SV42.102009.5},
  year={2009}
}