ANH, Hoang Quoc et al.
 Study on Extraction Efficiency of Polycyclic Aromatic Hydrocarbons (PAHs) in Soil Samples by Ultrasonic Methods.
<strong>VNU Journal of Science: Natural Sciences and Technology</strong>, [S.l.], mar. 2026.
ISSN 2588-1140.
Available at: &lt;<a href="https://js.vnu.edu.vn/NST/article/view/5900" target="_new">https://js.vnu.edu.vn/NST/article/view/5900</a>&gt;. Date accessed: 08 apr. 2026.
doi: <a href="https://doi.org/10.25073/2588-1140/vnunst.5900">https://doi.org/10.25073/2588-1140/vnunst.5900</a>.