@article{d. szpurek2005ultrasonographic,
  title={An ultrasonographic morphological index for prediction of ovarian tumor malignancy},
  author={d. szpurek,r. moszynski,w. zietkowiak,m. spaczynski,s. sajdak},
  journal={European Journal of Gynaecological Oncology},
  volume={26},
  number={1},
  pages={51--54},
  doi = {10.12892/ejgo20050151},
  year={2005}
}