@techreport{1995-terHofstede-ShellTowards, author = "{ter Hofstede}, A.H.M. and {Bosman}, F.J.M. and {van der Weide}, Th.P.", title = "{Towards a Data Modeling Shell}", number = "CSI--R9513", month = "November", institution = "Radboud University Nijmegen", organization = "Radboud University Nijmegen", year = "1995", code = "icis.CSI-R9513", research_group = "icis", class = "Report" }