Malik, S. R.; Rahman, M.; Mia, M.; Jobber, A.; Bairagi, A. K.; Reza, S.; Ahmed, M.; Yeasmin, N. Comprehensive Benchmark Procedures for Commissioning, Quality Assurance and Treatment Delivery for Quality Cancer Therapy Using Co-60 Teletherapy Machine. Bangla J Med Phys 2014, 6, 3-20.