Le, Tuan Phuc, et al. “Rapid Identification of the Geographical Origin of Black Pepper in Vietnam Using Near-Infrared Spectroscopy and Chemometrics”. JST: Engineering And Technology For Sustainable Development, vol. 33, no. 1, Mar. 2023, pp. 1-8, doi:10.51316/jst.164.etsd.2023.33.1.1.