@inbook{inbook33c998c7,
title   = {Chordomas and chondrosarcomas of the cranial base},
author = {Al-Mefty, Ossama and Colli, Benedicto Oscar and Angtuaco, Edgardo J. and Hug, Eugen B.},
year = {2005},
publisher = {Elsevier},
journal   = {Textbook of neuro-oncology}
}