The officially published papers were retrieved by ISSN, which means that the papers have been successfully included by retrieval tools such as ISSN. ISSN is an international standard number for identifying periodicals and other serial publications, which consists of 8 digits.

Papers are collected by retrieval tools such as ISSN, usually through journals or conference publications. This means that the paper has undergone a rigorous review and editing process and is considered to have academic value.

Through retrieval tools such as ISSN, readers can easily search and find papers, understand their details and related research. This also means that the author's popularity in academic circles may increase, because their research results are known and cited by more people.

In a word, ISSN's retrieval of officially published papers is an recognition of the quality and academic value of the papers, which is helpful to improve the visibility and citation rate of the papers.