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2. Significance of MRI changes after surgery of the skull base;Anand;Otolaryngol Head Neck Surg,1993
3. Transfacial exposure of anterior cranial fossa and clival tumors;Beals;BNI Quarterly,1992
4. Classification of transfacial approaches in the treatment of tumors of the anterior skull base and clivus;Beals;Plast Surg Forum,1993
5. Classification of transfacial approaches in the treatment of tumors of the anterior skull base and clivus;Beals,1994