@article{1991-Bommel-CSTransform,
  author		= "Bommel, P. van and Weide, Th.P. van der",
  title			= "{Reducing the search space for conceptual schema transformation}",
  journal		= "Data \& Knowledge Engineering",
  volume		= "8",
  year			= "1992",
  code			= "icis.91-4",
  research_group	= "iris",
  pages			= "269--292",
  class			= "Journal"
}