?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=M.E.&rft.au=Doldersum%2C+M.E.&rft.aulast=Doldersum&rft.date=2018&rft.title=Influences+on+changes+in+the+number+of+start-ups+and+entrepreneurial+activity+-+Case+study%3A+The+Netherlands+and+Germany&rft.degree=Master