@article{a. ayhan2001metastasis,
  title={Ovarian metastasis of primary biliary and gallbladder carcinomas},
  author={a. ayhan,i. guney,b. saygan-karamursel,c. taskiran},
  journal={European Journal of Gynaecological Oncology},
  volume={22},
  number={5},
  pages={377--378},
  doi = {10.12892/ejgo200105377},
  year={2001}
}