Directory of Open Access Journals (DOAJ)  (https://doaj.org/)

Scilit  database (https://www.scilit.net/)

Directorio Latindex  (folio:25225)  (http://www.latindex.org/latindex/ficha?folio=25225)

Crossref Metadata (https://www.crossref.org/)

Spermova database (http://spermova.pe/site2)