|  |  | 
| 1999 | ||
|---|---|---|
| 2 | EE | Oliver Bastert, Christian Matuszewski: Layered Drawings of Digraphs. Drawing Graphs 1999: 87-120 | 
| 1 | EE | Christian Matuszewski, Robby Schönfeld, Paul Molitor: Using Sifting for k -Layer Straightline Crossing Minimization. Graph Drawing 1999: 217-224 | 
| 1 | Oliver Bastert | [2] | 
| 2 | Paul Molitor | [1] | 
| 3 | Robby Schönfeld | [1] |