Indexing and abstracting:
IJOPCM is indexed by:
2. EBSCO (new)
3. Ulrich's Periodicals Directory
4. European Mathematical Information Service (EMIS)
Electronic Library of Mathematics (ELibM)
5. American Mathematical Society (AMS)
AMS Digital Mathematics Registry
6. JournalSeek
7. Directory of Open Access Journals (DOAJ)
10. ZDB_IMPRESSUM
11. Open Access News
13. Intute Science, Engineering and Technology Database
15. NewJour Database