From this page you have access to national and international libraries, collective catalogs, among others.
BASE - Bielefed Academic Search Engine - Database containing scientific articles.
National Digital Library - Digital Library of the National Library Foundation
CCN - National Collective Catalog - It gathers, in a single National Catalog with public access, the information on technical-scientific periodicals gathered in hundreds of catalogs distributed in the various libraries in the country.
CORE - Open database containing scientific articles.
DEDALUS - Bibliographic catalog of USP libraries.
Dissemin atemin - Open repository of scientific articles.
GED ABNT - Brazilian Association of Technical Standards
HathiTrust - Partnership between institutions and libraries around the world, aiming at the dissemination of knowledge. HathiTrust is a partnership of major research institutions and libraries working to ensure that the cultural record is preserved and accessible long into the future. The mission of HathiTrust is to contribute to research, scholarship, and the common good by collaboratively collecting, organizing, preserving, communicating, and sharing the record of human knowledge. There are more than 120 partners in HathiTrust, and membership is open to institutions worldwide.
KVK - Catalog from around the world, mainly in German.
OAIster - Search the catalog of various libraries around the world
Integrated Search Portal - System for discovering and consulting the printed and online USP Bibliographic Catalog and other accesses.
Brazilian Journals - Indexing base of Brazilian scientific journals.
WebQUALIS - This is a classification system for national and international journals. The classification of journals is carried out by the evaluation areas and undergoes an annual update process. These vehicles are classified in strata indicative of quality - A1, the highest; A2; B1; B2; B3; B4; B5; C - with zero weight.
Figshare - Get more citations for all of the outputs of your academic research over 5000 citations of figshare content to date.