Hamid Reza ERFANIAN และผู้แต่งคนอื่นๆ. (2014) A New Approach for Generalized Partial Derivatives of Non-smooth Functions. <i>Walailak Journal of Science and Technology</i>, <i>11</i>(12), 1031.Hamid Reza ERFANIAN และผู้แต่งคนอื่นๆ. "A New Approach for Generalized Partial Derivatives of Non-smooth Functions". Walailak Journal of Science and Technology 11 (2014):1031.Hamid Reza ERFANIAN และผู้แต่งคนอื่นๆ. A New Approach for Generalized Partial Derivatives of Non-smooth Functions. Walailak University:ม.ป.ท. 2014.