This journal utilizes the LOCKSS and CLOCKSS systems to create a distributed archiving system among participating libraries and permits those libraries to create permanent archives of the journal for purposes of preservation and restoration.  The Indonesia Publication Index (Garuda Publication Index) digitally preserves a full copy of the content of this journal. The digital archives are accessible through the Science And Technology Index (SINTA) Ministry of Education and Culture Republic of Indonesia, National Library (Garuda).