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- [42] Rapid continuum variability in NGC 4151 SPACE BASED ASTRONOMY: ISO, AGN, RADIOPULSARS AND THE SUN, 1998, 21 (1-2): : 77 - 81
- [46] The warm scattering medium in NGC 4151 X-RAY ASTRONOMY: STELLAR ENDPOINTS, AGN, AND THE DIFFUSE X-RAY BACKGROUND, 2001, 599 : 1003 - 1006
- [49] Observing NGC 4151 with the Keck interferometer NEW FRONTIERS IN STELLAR INTERFEROMETRY, PTS 1-3, 2004, 5491 : 1 - 8