1. Revascularization and bone healing after anterior maxillary osteotomy;Bell;J Oral Surg,1969
2. Revascularization and bone healing after posterior maxillary ostectomy;Bell;J Oral Surg,1971
3. Bone healing and revascularization after total maxillary osteotomy;Bell;J Oral Surg,1975
4. Lip posture and its significance in treatment planning;Burstone;Am J Orthod,1967
5. Lip morphology and area changes associated with surgical correction of mandibular prognathism;Weinstein;J Oral Rehabil,1982