This is normal behavior. Just compile the file twice after compiling the .bib file. Roughly:
Pdflatex file.tex Bibtex file.tex Pdflatex file.tex Pdflatex file.tex Sent from my iPhone > On Jul 11, 2014, at 8:16 PM, Bruno Morgado <jb.morg...@gmail.com> wrote: > > Hi all, > I was writing the introduction to my PhD thesis and since the references to > some pictures were showing up as ??
