Anh, Hoang, 		Hieu, Nguyen, 		Minh, Trinh, 		Hue, Chu, 		Huong, Nguyen, 		Hue, Hoang, AND 		Minh, Tu.
" Study on Extraction Efficiency of Polycyclic Aromatic Hydrocarbons (PAHs) in Soil Samples by Ultrasonic Methods" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], (27 March 2026)