@article{a. jankowska2004of,
  title={Expression of beta-human chorionic gonadotropin in ovarian cancer tissue},
  author={e. nowak-markwitz,a. jankowska,m. andrusiewicz,a. szczerba},
  journal={European Journal of Gynaecological Oncology},
  volume={25},
  number={4},
  pages={465--469},
  doi = {10.12892/ejgo200404465},
  year={2004}
}