Son, Tran, Trang, Luu, Hang, Do, Phuong, Kieu, Son, Nguyen, AND Liem, Pham. " Analysis and Evaluation of Tar and Nicotin Content in some Cigarette Products of Vietnam in 2023" VNU Journal of Science: Natural Sciences and Technology [Online], Volume 40 Number 2 (17 April 2024)