Nguyen Thi Hoa, , Pham Van Tuan, Dinh Tran Ngoc Huy, Nguyen Dinh Trung,. 2021. “MARKETING STRATEGIES FOR TOURISM AND DIGITAL TECH APPLICATIONS IN TOURISM INDUSTRY - A CASE OF OCH TOURISM CORPORATION IN VIETNAM ”. Design Engineering, September, 13938-50. http://thedesignengineering.com/index.php/DE/article/view/4657.