Malignant transformation of chondroblastoma.

@article{Psl1996MalignantTO,
  title={Malignant transformation of chondroblastoma.},
  author={Miriam P{\"o}sl and Martin Werner and Michael Amling and H. Ritzel and Guenter Delling},
  journal={Histopathology},
  year={1996},
  volume={29 5},
  pages={477-80}
}