@InProceedings{gogolla:DagSemProc.08331.6,
  author =	{Gogolla, Martin},
  title =	{{On Horizontal and Vertical Relationships between Models}},
  booktitle =	{Perspectives Workshop: Model Engineering of Complex Systems (MECS)},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2008},
  volume =	{8331},
  editor =	{Uwe A{\ss}mann and Jean B\'{e}zivin and Richard Paige and Bernhard Rumpe and Douglas C. Schmidt},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.08331.6},
  URN =		{urn:nbn:de:0030-drops-16351},
  doi =		{10.4230/DagSemProc.08331.6},
  annote =	{Keywords: Model, Model Relationship, Model Transformation, Model Development}
}