<ul><li><a href=https://www.btk.gov.tr/uploads/pages/elektronik-haberlesme-sektorunde-pazar-analizleri/sabitaramahizmeti-pa-nd-2014.pdf target=_blank>Information and Communication Technologies Authority, Market Analysis for Call Services via Fixed Telephone Network(BİLGİ TEKNOLOJİLERİ VE İLETİŞİM KURUMU, PAZAR ANALİZİ ÇALIŞMALARI, SABİT ŞEBEKELER ÜZERİNDEN ARAMA HİZMETİ PAZARI,  March 2014)</a></li><li><a href=https://www.btk.gov.tr/uploads/pages/elektronik-haberlesme-sektorunde-pazar-analizleri/sscspa-nihai-dokuman.pdf target=_blank>Information and Communication Technologies Authority, Market Analysis for Call Termination on Fixed Networks(BİLGİ TEKNOLOJİLERİ VE İLETİŞİM KURUMU, PAZAR ANALİZİ ÇALIŞMALARI, SABİT ŞEBEKEDE ÇAĞRI SONLANDIRMA PAZARI, 2020)</a></li><li><a href=https://www.btk.gov.tr/uploads/pages/elektronik-haberlesme-sektorunde-pazar-analizleri/tsyme-pa-nd-2019.pdf target=_blank>Information and Communication Technologies Authority, Market Analysis Report of 2019 on Fixed Wholesale Local and Central Access Markets(BİLGİ TEKNOLOJİLERİ VE İLETİŞİM KURUMU, TOPTAN SABİT YEREL VE MERKEZİ ERİŞİM PAZARLARI, 2019)</a></li></ul>