Item deposited via Symplectic Elements by user: MS Hoa Dinh HR Feed Proprietary ID: E5016137 EmailHoa.Dinh@vu.edu.au ---------- Elements publication ID: 488001. "Authors retain the copyright of their manuscripts, and all open access articles are distributed under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited." - from http://journals.pu.edu.pk/journals/index.php/pujm/about/editorialPolicies#focusAndScope - HD 13/7/23