@article{a. m. martinez2003of,
  title={Assessment of breast lesions using Doppler with contrast agents},
  author={a. m. martinez,c. j. medina,c. bustos,j. a. g. g. hernandez},
  journal={European Journal of Gynaecological Oncology},
  volume={24},
  number={6},
  pages={527--530},
  doi = {10.12892/ejgo200306527},
  year={2003}
}