galaxie de Seyfert

[1976] Seyfert galaxies, quasars and redshifts ; Daniel W. Weedman ; Quarterly Journal of the Royal Astronomical Society 17 (1976) p. 227 [lien]
[1977] Seyfert Galaxies ; Daniel W. Weedman ; Annual Review of Astronomy and Astrophysics 15 (1977) p. 69 [lien]