Gürdal, O. “A New Approach to Calculate the Current Density and the Surface Charge Density in the Conductor Carrying Steady State Current, Employing the Gradient of the Scalar Function-Resistance”. Elektronika ir Elektrotechnika 88, no. 8 (October 20, 2008): 33-36. Accessed April 23, 2021. https://eejournal.ktu.lt/index.php/elt/article/view/11229.