Nia Khurfatul Jannah, Dini Amalia, Tahniatus Saida, Widya Novel Syawaliah, Raya Iputya Anggani, Betty Afnisa Aristianti, Diaz Rachmawati, Nihayatul Muktasidah, Durinda Puspasari and Ady Pratama Sanjaya 2026. Optimization of Supply Inventory Control Systems for Product Differentiation and the Educational Tourism Attraction of Bakpia Djava Yogyakarta. International Journal of Business and Quality Research. 4, 03 (Jul. 2026), 280-300. DOI:https://doi.org/10.63922/ijbqr.v4i03.5235.