Minaei, S., Chenarbon, H. A., Motevali, A., & Hosseini, A. A. (2014). Energy consumption, thermal utilization efficiency and hypericin content in drying leaves of St John’s Wort (Hypericum Perforatum). Journal of Energy in Southern Africa, 25(3), 27–35. https://doi.org/10.17159/2413-3051/2014/v25i3a2655