The website of the paper is as follows:
1, China hownet (periodicals, dissertations)
2, VIP information China science and technology journal database (journal papers)
3. Wanfang Digital Resource System (dissertations, conference papers and foreign documents)
4. Academic search reading programs
5. Superstar Digital Library (academic search for e-books, lectures and reading programs).
Papers are often used to refer to articles that conduct research in various academic fields and describe academic research results, which are referred to as papers for short. It is not only a means to discuss problems in academic research, but also a tool to describe academic research results in academic exchanges. Including academic papers, graduation papers, dissertations, scientific papers, achievement papers and so on.