References before appendix

Question

My (BiBTeX) references need to appear before my appendix, but my appendix contains new references. These references are flagged as undefined unless my bibliography appears AFTER the appendix. Is there a way to fix this?

Answer 1

This kind of behaviour is usually fixed by compiling your document more than once.

Every time you compile your document latex reads and writes information to a few different files: \jobname.aux, \jobname.toc, etc. When you use biblatex you run bibtex, or biber, etc to update the bibliography auxiliary files. Once these files are updated, you re-compile the original document which will be able to read the updated reference & citation information.