|Latindex Directorio (Approved)
It is the result of the cooperation of a network of institutions that it works in a coordinated manner to collect and disseminate bibliographic information on serial scientific publications produced in the region.
|BASE - Bielefeld Academic Search Engine(Approved)
BASE is one of the world's most voluminous search engines especially for academic web resources. BASE provides more than 140 million documents from more than 6,000 sources. You can access the full texts of about 60% of the indexed documents for free (Open Access). BASE is operated by Bielefeld University Library.