Einsatzgruppen Thesis
My thesis, entitled From Weimar to Nuremberg, addresses the motives which lay behind the Jewish Holocaust, and is based on the records of Case IX of the Nuremberg Trials. If you're looking for a little light reading, the full pdf version is available for download.
For basic information on the Einsatzgruppen click here. Information on Case IX of the Nuremberg Trials is available here. One of the best websites for Holocaust research in general is The International Institute for Holocaust Reasearch.