Figure 5
From: Chordal- (k,ℓ)and strongly chordal- (k,ℓ)graph sandwich problems

Marks of Zorro in positive and negative orientations, from left to right.
From: Chordal- (k,ℓ)and strongly chordal- (k,ℓ)graph sandwich problems
Marks of Zorro in positive and negative orientations, from left to right.