%.fmt: preamble.tex
$(LATEX) $(LATEXFLAGS) -ini -jobname="$(basename $@)" "&$(LATEX) $<\dump"
-%.pdf: %.tex %.fmt $(TEXS)
+%.pdf: %.tex %.fmt %.bib $(TEXS)
$(LATEX) $(LATEXFLAGS) $<
grep -q '^\\bibdata{' $(basename $<).aux && $(BIBTEX) $(basename $<) || true
$(LATEX) $(LATEXFLAGS) $< | tee $(basename $<).mlog