Though not necessary,a paper publication written by you can hold you in good stead.
In the course of your regular studies if you have written and published a Research paper ,it will help to show case it.
A paper publication which is also an article, would be considered valid if it undergoes a process of peer review by one or more referees (who are academics in the same field) who check that the content of the paper is suitable for publication in the journal.
Publishing a research paper in a journal or conference is an important activity within the academic community. It allows you to collaborate and network with other scholars and experts and to further refine your ideas and research. Academic journals are probably the most common place for scholars to publish their research.
Different types of peer-reviewed research journals; these specific publications are about economics. An academic or scholarly journal is a periodical publication in which scholarship relating to a particular academic discipline is published..... They are usually peer-reviewed or refereed.
A scientific paper is a written report describing original research results whose format has been defined by centuries of developing tradition, editorial practice, scientific ethics and the interplay with printing and publishing services.
So if you have such a paper publication at hand,it will surely help to support your cause,more so if your topic and treatment of the same are unique and original.