On a Visibility Representation of Graphs. - Francisco Javier Cobos; Juan Carlos Dana; Ferran Hurtado; Alberto Márquez 001; F. Mateos (GD, 1995)

The width of a convex set on the sphere. - Francisco Javier Cobos; Juan Carlos Dana; Clara I. Grima; Alberto Márquez 001 (CCCG, 1997)

Diameter of a set on the cylinder. - Francisco Javier Cobos; Juan Carlos Dana; Clara I. Grima; Alberto Márquez 001 (CCCG, 1997)

Triangle-Free Planar Graphs as Segments Intersection Graphs. - Natalia de Castro; Francisco Javier Cobos; Juan Carlos Dana; Alberto Márquez 001; Marc Noy (GD, 1999)

Triangle-Free Planar Graphs and Segment Intersection Graphs. - Natalia de Castro; Francisco Javier Cobos; Juan Carlos Dana; Alberto Márquez 001; Marc Noy (J. Graph Algorithms Appl., 2002)