WASET
A.Campanile, A. , Mandarino, M. , Piscopo, V. , Pranzitelli, A. (2009). 'On the Exact Solution of Non-Uniform Torsion for Beams with Axial Symmetric Cross-Section'. World Academy of Science, Engineering and Technology, Open Science Index 31, International Journal of Mechanical and Mechatronics Engineering, 3(7), 746 - 755.