@article{c. taskiran2006as,
  title={Topotecan as a second-line therapy in patients with ovarian and primary peritoneal cancer: initial response and long-term follow-up},
  author={a. ayhan,c. taskiran,n. yigit-celik,m. gultekin,s. tuncer,n. guler,k. yuce},
  journal={European Journal of Gynaecological Oncology},
  volume={27},
  number={6},
  pages={603--606},
  doi = {10.12892/ejgo200606603},
  year={2006}
}