@techreport{1995-Hofstede-Shell,
  author		= "Hofstede, A.H.M. ter and Bosman, F.J.M. and Weide, Th.P. van der",
  title			= "{Toward a Data Modeling Shell}",
  month			= "November",
  institution		= "Computing Science Institute, University of Nijmegen, Nijmegen, The Netherlands",
  year			= "1995",
  research_group	= "iris",
  class			= "Report"
}