1. The person with the first signature on the paper is the first author, and the person with the second and third signature is the second and third author. Generally, it depends on the weight of your article. If the weight is sufficient, you can sign multiple authors. An article on a foreign multi-center clinical trial can attract 100 people.
2. Articles generally have a corresponding author, who refers to the owner and director of the article. Others have a corresponding author, who refers to the contact person.
3. This ranking can also be determined by discussion between both parties. If there is no agreement, generally the person ranked first is the first author, the person ranked second is the second author, and so on.
Extended information:
In the case of signatures on innovative works such as scientific research papers, patents, research reports, etc., where multiple authors have completed them simultaneously, their contribution to the work The oldest person's name is usually signed first.
Especially for the signature of scientific research papers, each journal has more detailed regulations; when the signature of the paper is used for professional title evaluation, the first author is obviously more important than the second and third authors, and It is lighter than a single signature.
Due to the complexity and diversification of scientific research, for example, in bioinformatics, there are hundreds of people signing a paper. The first author refers to the person with the first signature. Some articles are signed by two or more first authors, which are called concurrent first authors. In this case, it is generally necessary to mark the person's name.
In addition, the first author is different from the corresponding author, and different from the creative contribution. The corresponding author is often the most authoritative among the authors in the field of the paper.
Reference: Baidu Encyclopedia-First Author