The Journal of Mathematics Learning (JML) is fully committed to the cause of digital preservation of scientific research. The digital content of the Journal is extremely valuable and measures are in place to ensure both its current accessibility and long-term preservation. 
The JML articles in digital format are archived on A national library Perpustakaan Nasional RI (Indonesia OneSearch-IOS)  and in the Indonesian Scientific Journal Database (ISJD). All digital Journal content is stored on a secure server which is backed up frequently. In the event of a problem, the back-up will be restored within 24 hours.

Abstracting and Indexing
Just having an article published is not enough. The sheer number of articles out there makes discoverability an essential issue. To be recognized as a first-class source of information, a journal must be widely available. And as most searching is now done online, it is paramount for individual articles and journals to be indexed by leading abstracting and indexing (A&I) services.
The JML open uses the XML metadata (and full text) format, which is based on NLM DTD, a widely used industry standard that enables automatic data export to a large number of partners. JML open closely cooperates with the majority of A&I services, citation indexes, and discovery services such as

and will grow further.