Appropriate base representation using a run graph. - Gladys Monagan; Markus Röösli (ICDAR, 1993)

Adding Geometric Constraints to the Vectorization of Line Drawings. - Markus Röösli; Gladys Monagan (GREC, 1995)

A high quality vectorization combining local quality measures and global constraints. - Markus Röösli; Gladys Monagan (ICDAR, 1995)