Farid, M., Mase, L. Z., Setyowati, N., Muktamar, Z., Negara, B. F. S. P., and Likitlersuang, S. 2023. “Identification of soil porosity using geophysical and geotechnical observation for agricultural application”. International Journal of Agricultural Technology 19 (4):1515-24. https://li04.tci-thaijo.org/index.php/IJAT/article/view/10493.