Topakci, Mehmet, Allan Rennie Rennie, Huseyin Kursat Celik, Murad Canakci, and Davut Karayel. 2010. “Technology Structural Optimisation of a Subsoiler: Structural Optimisation of a Subsoiler”. Biological Sciences - PJSIR 53 (5):281-87. https://v2.pjsir.org/index.php/biological-sciences/article/view/479.