Indexing and Abstracting

SPEKTRA, with registered number ISSN 2442-9910 (print) and ISSN 2548-642X (online), has been indexed on: 

  1. SINTA
  2. Crossref
  3. Garuda
  4. Google Scholar
  5. Dimensions 
  6. Directory of Research Journals Indexing
  7. DOAJ
  8. Scientific Indexing Services
  9. Scientific Journal Impact Factor