-#all: $(patsubst %.tex,%.pdf,$(wildcard *.tex))
-all: project_description.pdf references.pdf
-pdf: all
+all: $(patsubst %.tex,%.pdf,$(wildcard *.tex))
+
+# use the following section for Rnw/knitr documents
+# all: $(patsubst %.Rnw,%.pdf,$(wildcard *.Rnw))
+# %.tex: %.Rnw
+# Rscript -e "library(knitr); knit('$<')"
+
+refs-processed.bib:
+ perl -p -e 's/©//' refs.bib > refs-processed.bib
+ perl -0pe 's/,\s+(file|abstract) = \{.*?\}(,\n|\n)/\2/sg' refs-processed.bib |sponge refs-processed.bib
+ recode -d u8..ltex < refs-processed.bib | sponge refs-processed.bib