closes #4; refined data collection

resources/citation-abbreviations.csl

@@ -0,0 +1,8 @@
+{ "default": {
+    "container-title": {
+            "European Social Survey European Research Infrastructure": "ESS ERIC",
+            "Bundeskriminalamt": "BKA",
+            "Scots Law Times": "SLT"
+    }
+    }
+}