@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"
}