1. Linnoila R.I., Keiser H.R., Steinberg S.M., Lack E.E. Histopathology of benign versus malignant sympathoadrenal paragangliomas: Clinicopathologic study of 120 cases including unusual histologic features. Hum. Pathol. 21:1168, 1990.
2. Hosaka Y., Rainwater L.M., Grant C.S., Farrow G.M., Van Heerden J.A., Lieber M.M. Pheochromocytoma: Nuclear deoxyribonucleic acid pattern by flow cytometry. Surgery 100:1003, 1986.
3. Mornex R., Berthezene F., Peyrin L., Tran Minh V., Martin J.P., Fulchiron D. Phéochromocytomes malins. Arch. Mal. Coeur 72:96, 1979.
4. Hauss J., Pircher W., Spiegel H.U., Kertelge E., Roessner A., Vetter H. Pheochromozytombehandlung: Wandel von Diagnostik und Therapie. Acta Med. Austr. 4:95, 1988.
5. Badet C. Fr Les phéochromocytomes malins. Etude de 14 observations. Revue de la littérature Thèse Lyon, 1990. University of Lyon, Ed., Lyon.