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2. The Radio Jets and Accretion Disk in NGC 4261
3. Blair, D. G., Burman, R., Woodings, L. J. S., Mulder, M., & Zadnik, M. G. 1997, in Omnidirectional Gravitational Radiation Observatory, ed. W. F. Velloso, O. D. Aguiar, & N. S. Magalhães (World Scientific), 251
4. Coccia, E., & Fafone, V. 1997, in Omnidirectional Gravitational Radiation Observatory, ed. W. F. Velloso, O. D. Aguiar, & N. S. Magalhães (World Scientific), 113