Scientific publishing is the ultimate product of scientist work. Number of publications and their quoting are measures of scientist success while unpublished researches are invisible to the scientific community, and as such nonexistent. Researchers in their work rely on their predecessors, while the extent of use of one scientist work, as a source for the work of other authors is the verification of its contributions to the growth of human knowledge. If the author has published an article in a scientific journal it cannot publish the article in any other journal h with a few minor adjustments or without quoting parts of the first article, which are used in another article. Copyright infringement occurs when the author of a new article with or without the mentioning the author used substantial portions of previously published articles, including tables and figures. Scientific institutions and universities should,in accordance with the principles of Good Scientific Practice (GSP) and Good Laboratory Practices (GLP) have a center for monitoring,security, promotion and development of quality research. Establish rules and compliance to rules of good scientific practice are the obligations of each research institutions,universities and every individual-researchers,regardless of which area of science is investigated. In this way, internal quality control ensures that a research institution such as a university, assume responsibility for creating an environment that promotes standards of excellence, intellectual honesty and legality. Although the truth should be the aim of scientific research, it is not guiding fact for all scientists. The best way to reach the truth in its study and to avoid the methodological and ethical mistakes is to consistently apply scientific methods and ethical standards in research. Although variously defined plagiarism is basically intended to deceive the reader's own scientific contribution. There is no general regulation of control of scientific research and intellectual honesty of researchers which would be absolutely applicable in all situations and in all research institutions. A special form of plagiarism is self-plagiarism. Scientists need to take into consideration this form of plagiarism, though for now there is an attitude as much as their own words can be used without the word about plagiarism. If the authors cite their own research facilities already stated then they should be put in quote sand cite the source in which it was published. Science should not be exempt from disclosure and sanctioning plagiarism. In the fight against intellectual dishonesty on ethics education in science has a significant place. A general understanding of ethics in scientific research work in all its stages had to be acquired during the undergraduate course and continue to intensify. It is also important ethical aspect of the publishing industry,especially in small and developing economies,because the issuer has an educational role in the development of the scientific community that aspires to relish so. In this paper author describe his experiences in discovering of plagiarism as Editor-in-Chief of three indexed medical journals with presentations of several examples of plagiarism recorded in countries in Southeastern Europe.