T.-V. Do Thi, T.-H. Nguyen Thi, A.-H. Nguyen, and N.-B. Tran Thi, “Chemical compositions and anti-acetylcholinesterase, nitric oxide suppressing activities of Piper longum fruits oil”, HPU2. Nat. Sci. Tech, vol. 2, no. 1, pp. 38–45, Apr. 2023.