A Statistically-Assisted Sketch-Based Interface for Creating Arbitrary 3-dimensional Faces. - Örn Gunnarsson; Steve C. Maddock (TPCG, 2007)

Sketching Faces. - Örn Gunnarsson; Steve C. Maddock (SBIM, 2008)

Sketch-Based Posing of 3D Faces for Facial Animation. - Örn Gunnarsson; Steve C. Maddock (TPCG, 2010)

Sketching 3D faces. - Örn Gunnarsson (2010)