Sardor Kodirov. “THE IMPACT OF LEAN SIX SIGMA TOOLS ON CUSTOMER SATISFACTION AND RETENTION: EVIDENCE FROM A BEVERAGE MANUFACTURING FIRM IN UZBEKISTAN”. Modern World Education: New Age Problems – New solutions 3, no. 2 (February 3, 2026): 10–11. Accessed February 28, 2026. https://incop.org/index.php/mo/article/view/3237.