@article{g.m. yousef2007duct,
  title={Salivary duct carcinoma presenting with vaginal metastasis: case report},
  author={m.y. gabril,g.m. yousef},
  journal={European Journal of Gynaecological Oncology},
  volume={28},
  number={5},
  pages={415--417},
  doi = {10.12892/ejgo200705415},
  year={2007}
}