Class B: Papers published in important core journals refer to papers published in foreign core journals (see Handbook of Foreign Science and Technology Core Journals) or papers published in Chinese core journals with important influence in similar disciplines in China.
Class C: general core periodical papers, which refer to the papers published in the magazine Overview of National Chinese Core Journals-Peking University Library 2004 Edition.
Class D: Papers published in general public journals refer to papers published in domestic public journals (journal numbers "CN" and "ISSN" with postal codes).
Class E: Papers published in restricted public publications refer to papers published in domestic publications that are publicly released but restricted (only periodical number, no mailing code).
Paper type:
Thematic type: this is a kind of paper that expresses opinions in the form of direct discussion and puts forward academic problems of a certain subject from the front on the basis of analyzing previous research results.
Argumentative paper: This is a paper that aims at others' views on an academic problem of a certain subject, with sufficient arguments, focusing on exposing its shortcomings or mistakes, and expressing opinions through argumentation.
This is a kind of paper that introduces or comments on an academic problem of a certain subject on the basis of summarizing the research results of predecessors or present people to express their own opinions.
Comprehensive type: This is a paper written by organically combining summary type and demonstration type.
Refer to the above content: Baidu Encyclopedia-Papers