In the issue of June 2020 (Vol 19 No. 1), we missed to put the e-ISSN number of the Jurnal Gravitasi, the DOI number of the article, and also the License and Copyright.
So, in the next issue we will place the ISSN, DOI, License and Copyright in the first page. We convey this matter because those two things are really important as identities of an published article.
Thank you very much.
Editor in Chief