... Licensed re-use rights only ETDs Electronic theses and dissertations Information retrieval Search engines Retrieval efficiency Grey literature Theses and dissertations are primary, rich, unique and valuable sources of scholarly information of focused, extensive and in-depth research work...

... of results retrieved. Google scholar Bibliometric analysis Information retrieval Retrieval effectiveness Content evaluation Retrieval efficiency Retrieval performance A review of percentages of journal article sources from the 250 references are examined are in the following tables (Tables I...