[1]Chi, N.T.K. et al. 2016. Effect of hot drying on the essential oil content and colour charactiristics of peppermint (Mentha piperita). Vietnam Journal of Science and Technology. 54, 3 (Jun. 2016), 314–332. DOI:https://doi.org/10.15625/0866-708X/54/3/6494.