bibtexkey,authors,year,entry_type,address,annote,book_title,chapter,crossref,edition,editors,how_published,institution,journal,month,note,number,organization,pages,publisher,school,title,volume,publication_history,series,designation Mayr1997diss,"Mayr, Rudolf H.",1997,phdthesis,,,,,,,,,,,,,,,,,"Rijksuniversiteit Leiden","The seal impressions of Ur III Umma",,,,"Mayr, PhD diss"