B1. Aydin  Y Çavusoglu H,  Kumar R , TÜRKMENOĞLU ON, Can SM, Sahin  A: Clinical and radiological outcome after longterm contralateral anterior cervical microdiscectomy: 10 years prospective study (Oral Presentation). Eur Spine J 2006: 15 (Suppl.4): S459-S489

B2.  Aydın Y,  Kaya RA,  Muslim M, Çavuşoğlu H, Türkmenoğlu O: Selection criteria and outcome of operative approaches for skull base meningiomas (Oral Presentation). IVth International Congress on Cerebral Venous System and Meningiomas. June 03-08, 2002 The Marmara Hotel, Istanbul, Turkey.

B3. Aydin Y, Can SM, Im Ziyal Türkmenoğlu O,  Kumar R , Sahin A: contralateral Anterior Interbody Fusion for Cervical Disc Microsurgical Approach Without Disease (Oral Presentation). World Spine I August 27-September 1, 2000, Berlin

B4. Aydın Y, Ziyal MI, Türkmen CS,  Kaya RA , Duman H: Modified Lumbar Microdiscectomy (Oral Presentation). AANS Annual Meeting-New Orleans, Louisiana, April 26, 1999, New Orleans, USA.

B5. Turkmen CS, Ziyal MI,  Kaya RA , Aydin Y: A new spinal stabilization system: Anterior intercorporal fixation with the türkmen device. Cadaver Study (Oral Presentation). 11th International congress of neurological surgery, July 6-11, 1997 Amsterdam

B6. Türkmen C, ZIYAL I,  Kumar R , Yilmaz H, Gençosmanoğlu B: A new stabilization system: Intercorporal fixation device for the stabilization thoracolumb (Oral Presentation). 37th Annual Scientific Meeting of the International Medical Society of Paraplegia, June 18-20, 1998 Brazil

B7. Bayhan M, Türey , Kaya RA , Erdemmez T, Ziyal M,  Çoban TE, Rizeli Y: Intracranial Aneurysms (Oral Presentation). XXIII. Semaine Medicale Balkanique 24-27.08.1994, Istanbul