Ethical use of self citations involves ensuring that they are relevant and necessary for the new research. Here are some guidelines:
Relevance: Only cite previous work that is directly related to the current study. Balance: Avoid excessive self-citation that skews the perceived importance of your work. Balance it with citations from other researchers. Transparency: Be transparent about the connection between the current and previous work to avoid any perception of self-promotion.
Following these principles helps maintain the integrity of scientific research and the trust of the academic community.