Dr. Mervin Jay Z. Suaybaguio. SMS TECHNOLOGY AS DISASTER WARNING AND ALERT SYSTEM AS PERCEIVED BY SELECTED CONSTITUENTS OF DAVAO DEL NORTE. RW-IRSSJ [Internet]. 2021 Aug. 29 [cited 2025 Jun. 23];7(1(1):38-51. Available from: https://researchersworld.com/index.php/rworld/article/view/434