1) De Armond, S.J., et al.: The application of glial fi brillary acidic (GFA) protein immunohistochemistry in neurooncology, Path. Res. Pract., 168: 374-394, 1980.
2) Deck, J. H. N., et al.: The role of glial fibrillary acidic protein in the diagnosis of central nervous system tumors, Acta Neuropath.(Berl.), 42: 183-190, 1978.
3) Duffy, P. E., et al.: Identification of glial fibrillary acidic protein by the immunoperoxidase method in human brain tumors, J. Neuropath. Exp. Neurol., 36: 645-652, 1977.
4) Eng, L. F., et al.: An acidic protein isolated from fi brous astrocytes, Brain Res., 28: 351-354, 1971.
5) Eng, L. F. and Rubinstein, L. J.: Contribution of immunohistochemistry to diagnostic problems of human cerebral tumors, J. Histochem. Cytochem., 26: 513-522,522, 1978.