Barokatut Toyibah. (2025). Implications of Halal Certification at LP3H (Lembaga Pendamping Proses Produk Halal) State Islamic University Sunan Kalijaga on the Investment Opportunity Set (IOS) of Halal Tourism Products in Yogyakarta. Journal of Islamic Economic and Business Studies, 3(1), 23–29. Retrieved from https://businessandfinanceanalyst.com/index.php/JIEBS/article/view/231