science-articles
BASE (Bielefeld)
A Bielefeld University academic search engine indexing over 400 million documents harvested from more than 12,000 content providers. The web portal is openly browsable for searching across this material. Its programmatic interface is limited to pre-registered IP addresses, so in practice you use it through the website.
Sem verificação programática, abre a própria busca do arquivo.
Por que é útil e como funciona
BASE (Bielefeld Academic Search Engine) is one of the largest academic search engines in the world, built by Bielefeld University from content harvested via the OAI-PMH protocol from thousands of repositories and data providers. You search across this enormous corpus on base-search.net using keyword, author, subject, or date filters. Because its programmatic interface is restricted to pre-registered institutions, Echo links you directly to the BASE search page so you can run your query there.
O que há dentro
More than 400 million documents from over 12,000 content providers, covering institutional repositories, digital libraries, and open-access journals across all disciplines and languages.
Acesso via API
É necessária uma chave de API (geralmente gratuita); veja os endpoints acima para saber onde obtê-la.
Acesso
May be geo- or IP-blocked from some networks.