Copyright Agreement

Authors who publish with this journal agree to the following terms:


  1. The article has never been published before and the authors have never given the copyright of the article to any party.
  2. Authors have obtained written permission to use the material previously copyrighted in this article and the document will be forwarded to SPIRAKEL at the same time as the article submission. The authors are responsible for any problems (conflicts of interest) that may arise related to the article.
  3. Authors assign and submit to SPIRAKEL all copyright ownership and permission to the article. Permission includes all rights publishing, derivation, distribution, sale, reuse, and display of workmanship either in whole or in part, including recompilation or publication itself in various forms of media, now or in the future, including media electronic and digitally protected by the laws of the Republic of Indonesia and other countries, and to authorize others to use the articles. Right-this right will belong to SPIRAKEL from the date of receipt of the article and as long as the validity of the copyright. SPIRAKEL, as the copyright owner, has permission to republish the article