For specialized research you may want to check literature reviews in dissertations. This is the primary index to 1.6 million dissertations and masters theses from academic institutions in the US, Canada, Great Britain, and Europe.
Most coverage comes from North American institutions. Many are full-text. Records show cited references, other publications with shared references, and later publications citing the work.
Language: English, Turkish, Chinese, French, Spanish, additional European languages
Keywords: Digital dissertation dissert thesis