Width-restricted layering of acyclic digraphs with consideration of dummy nodes.

Jürgen Branke Stefan Leppert Martin Middendorf Peter Eades Width-restricted layering of acyclic digraphs with consideration of dummy nodes. 59-63 2002 81 Inf. Process. Lett. 2 db/journals/ipl/ipl81.html#BrankeLME02 http://dx.doi.org/10.1016/S0020-0190(01)00200-9