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USTIK T, KOLODNENKO N. IMPLEMENTATION OF MARKETING TOOLS TO INCREASE CUSTOMER LOYALTY. Herald of Khmelnytskyi National University. Economic sciences [Internet]. 2024 Jan. 31 [cited 2026 Jan. 28];326(1):208-14. Available from: https://heraldes.khmnu.edu.ua/index.php/heraldes/article/view/36