Magazine cover
Class A: authoritative core journals, which refer to internationally accepted SCIE, EI, ISTP, SSCI, A &；; Papers included in the retrieval system by HCI (subject to the retrieval by China Institute of Science and Technology Information), or authoritative articles on the same topic published in domestic Chinese core journals, excluding other report abstracts.
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.
Periodical typesetting