Z Score Comparative Analysis of Tourism, Restaurant and Hotel Sub-Sector Companies Listed on The Indonesia Stock Exchange Before and After The Implementation of The Covid-19 Vaccine Policytittle . INVEST [Internet]. 2023 Apr. 8 [cited 2026 Jul. 30];4(1):101-9. Available from: https://journal.al-matani.com/index.php/invest/article/view/440