1. Science Hub

The famous sci-hub is a tool developed by Russians, who can download any literature and magazines. Enter the information such as the title and DOI of the document you want to download, and you can get the real address of the document, browse it online, and more importantly, download it.

2. Foundation

BASE is a multidisciplinary academic search engine developed by the Library of Bielefeld University in Germany, which provides integrated retrieval services for heterogeneous academic resources around the world. It integrates the book catalogue of the University Library of Bielefeld, Germany, and the open source data of about 160 (more than 2 million documents).

3. Google Academic

Google web application for searching academic articles for free. In June 2004, 165438+ 10, Google released the trial version of Google Academic Search for the first time. This index includes most published academic journals in the world, and it is a simple method to search academic literature extensively.

You can search many disciplines and data sources from one place: peer-reviewed articles, papers, books, abstracts and articles from academic publishers, professional associations, preprints, universities and other academic organizations.

4. The origin of the library

Library Genesis claims to be a plan to help all mankind spread knowledge, without copyright. There are many papers on the website, which are easy to download, as well as many foreign language books and Chinese books, which are updated almost every day. This is also a magical website. Basically all foreign books and papers can be searched and downloaded, and recent academic papers can also be downloaded.

Library Genesis and Sci-Hub are brothers in trouble. Before, both of them were in dispute because of Elsevier, and things that can't be downloaded from Library Genesis can also be downloaded directly from the webpage to Sci-Hub.