1) H. Obwegeser: Surgical Correction of Small or Retrodisplaced Maxillae. Plast. & Reconstr. Surg. 43: 351, 1969
2) H. Obwegeser & L. Marentette: Profile Planning Based on Alterations in the Positions of the Basis of the Facial Thirds J. of Oral and Max. Fac. Surg. 44: 302-311, 1986