Papers and documents can be found in libraries, document sharing websites and popular science journals. Among them, we can go directly to the library to consult some related books, from which we may get the corresponding literature. This method of obtaining files is also economical, but it may take more time. That's the problem? How to find papers and documents? The following is the supplementary content about the paper literature. Interested viewers are welcome to continue watching.

Supplement to papers and documents

1. Document sharing websites: There will be many document sharing websites now, and we may be able to find the documents we want from these websites.

2. Popular Science Periodicals: There are many popular science periodicals that regularly publish a large number of documents, and we can also find what we want through these popular science periodicals.

3. List the citation sources of documents: When we use other people's documents, we must list the citation sources of documents, otherwise the documents will be considered as your creation by definition.

4. Legal use of files: We must also use files under the premise of legality, otherwise illegal use of files may also bring us some punishment.

Are papers and documents directly extracted?