Item deposited via Symplectic Elements by user: MS Hoa Dinh HR Feed Proprietary ID: E5016137 EmailHoa.Dinh@vu.edu.au ---------- Elements publication ID: 445555. OA policy: This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. - from http://www.cs.ubbcluj.ro/~studia-m/index.php/journal/about/editorialPolicies#openAccessPolicy. "This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License" - from http://studia.ubbcluj.ro/serii/mathematica/index_en.html- HD 18/8/22