@article{r. zhang2012of,
  title={Treatment of malignant ovarian germ cell tumors and preservation of fertility},
  author={r. zhang,y.c. sun,g.y. zhang,l.y. wu,j. zuo},
  journal={European Journal of Gynaecological Oncology},
  volume={33},
  number={5},
  pages={489--492},
  doi = {10.12892/ejgo201205489},
  year={2012}
}