Prognostic factors in giant cell tumor of bone a modified histological grading system useful as a guide to prognosis - Komiya, S.; Inoue, A.; Nakashima, M.; Ueno, A.; Fujikawa, K.; Ikuta, H. (Springer, 1986)
http://dx.doi.org/10.1007/BF00455841
Keywords: WW-YZ