diff --git a/.local/bin/getbib b/.local/bin/getbib
new file mode 100755
index 0000000..ed441c5
--- /dev/null
+++ b/.local/bin/getbib
@@ -0,0 +1,14 @@
+#!/bin/sh
+[ -z "$1" ] && echo "Give either a pdf file or a DOI as an argument." && exit
+
+if [ -f "$1" ]; then
+	# Try to get DOI from pdfinfo or pdftotext output.
+	doi=$(pdfinfo "$1" | grep -io "doi:.*") ||
+	doi=$(pdftotext "$1" 2>/dev/null - | grep -io "doi:.*" -m 1) ||
+	exit 1
+else
+	doi="$1"
+fi
+
+# Check crossref.org for the bib citation.
+curl -s "http://api.crossref.org/works/$doi/transform/application/x-bibtex" -w "\\n"