Vo Thanh Tuyen and Hoang Thi Hoai Nga, Nguyen Thi Tieu Phung, Nguyen Hoang Huy, Le Quang Hau, “Digital transformation indicators and GRDP in the former Hau Giang Province, Vietnam: An exploratory analysis for 2015-2023”, VMOST JOSSH, vol. 68, no. 1, Apr. 2026.