Ghanbarian, D., Torki-Harchegani, M., GhasemiPirbalouti, A. and Sadeghi, M. 2018. Drying of peppermint leaves (Mentha piperita L.) in a combined hot air-ultrasonic dryer: Influences of temperature and ultrasound power on duration, energy consumption,and essential oil yield. Journal of Food Science and Technology. 81(15): 345-357. (In Farsi with English abstract)