Mohd Adeel Shamsi, Prof. Aftab Alam. A CUSTOMIZED LEAN SIX SIGMA APPROACH TO REDUCE POSTPAID DATA DISCREPANCY BETWEEN IT SYSTEMS AND TELECOM SWITCH. RW-IRSSJ [Internet]. 2021 Aug. 25 [cited 2024 Dec. 22];8(4):190-201. Available from: https://researchersworld.com/index.php/rworld/article/view/380