Extending the Sugiyama Algorithm for Drawing UML Class Diagrams: Towards Automatic Layout of Object-Oriented Software Diagrams.

Jochen Seemann Extending the Sugiyama Algorithm for Drawing UML Class Diagrams: Towards Automatic Layout of Object-Oriented Software Diagrams. 415-424 1997 conf/gd/1997 Graph Drawing db/conf/gd/gd1997.html#Seemann97