Is there a standard reference on stacks which discusses (relative) normalization?
This older question seemed to link to someone's notes, but the link is now broken. In any case, it would be nice to have a reference which is a book or a paper.
I've tried the stacks project, Martin Olsson's book on stacks, and Laumon/Moret-Bailly's "Champs Algebriques", and none of them seem to have anything on normalization of stacks (at least not in the index).
Quoting
Vistoli, Angelo
Intersection theory on algebraic stacks and on their moduli spaces.
Invent. Math. 97 (1989), no. 3, 613–670.
to be found here http://dx.doi.org/10.1007/BF01388892 :
Definition 1.18 p.623
`Definition. The normalization $F$ of a reduced stack $F$ with a presentation $R \rightrightarrows U$ is the stack associated with the groupoid $\overline{R} \rightrightarrows \overline{U}$. The normalization of a general stack is the normalization of its associated reduced stack.
If $F$ is a stack, the canonical morphism $\overline{F} \to F$ is representable. If $F$ is of finite type over a universally japanese ring (see EGA IV, 23.1.1) then $\overline{F} \to F$ is also finite.'
Here $\overline{R}$ and $\overline{U}$ denote the normalizations of $R$ and $U$, respectively.
