Study of Mathematical Models in Hot Air Drying of Herbs in Herbal Compress BallBoochita Wongpanit, Sumitta Chotikamas, Supacharee Roddecha, Prapakorn Tantayotai and Malinee SriariyanunMATEC Web Conf., 187 (2018) 01002DOI: https://doi.org/10.1051/matecconf/201818701002