Star Formation in Self-gravitating Disks in Active Galactic Nuclei. I. Metallicity Gradients in Broad-line Regions
Journal article published in 2011 by
J.-M. Wang,
J.-Q. Ge,
C. Hu,
J.~A Baldwin,
Y.-R. Li,
G.~J Ferland 
,
F. Xiang,
C.-S. Yan,
S. Zhang
,
F. Xiang,
C.-S. Yan,
S. Zhang
