Tsatiris, M. N. “The Case Study of Forest Bioenergy As a Method for the Application of Stratified Random Sampling With Optimum Allocation”. Current Approaches in Science and Technology Research Vol. 3 (May 27, 2021): 88–100. Accessed June 4, 2026. https://stm.bookpi.org/CASTR-V3/article/view/1415.