@article{gulnihal kutlu2008tumor,
  title={Parapharyngeal Tumor Mimicking Cervicogenic Headache},
  author={nurten inan,gulnihal kutlu,serap ucler,levent e. inan},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={22},
  number={1},
  pages={71--74},
  doi = {10.11607/jofph.22.1.09},
  year={2008}
}