"Modeling of Porosity Equation for Water Flow Through Packed Bed of Monosize Spherical Packing". مجلة الهندسة والتنمية المستدامة, م 15, عدد 4, ديسمبر، 2011, ص 205-26, https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1320.