paper.tex compiles fine, but
$ pdflatex paper.tex $ bibtex myBib I couldn't open file name `myBib.aux'
I happen to be using TeXShop, but the command line is unambiguous.
Thanks in advance.
In addition to Ian Thompson's comment, if you are using TeXShop then you don't even have to bother with the command line, as TeXShop provides you with a graphical interface. Just switch to BibTeX in the pop-up menu after a first LaTeX compilation, then press typeset (this is equivalent to calling