“…Duplicate publication is a tangential issue to our work: Our aim is not to analyze republications, but we were aware of the phenomenon, since some of the self‐citations turned out to fall in that category, especially on the conference originals sample. Therefore, for the sake of completeness, we cursorily mention that studies on duplicate publication can be found mainly for medical sciences (von Elm, Poglia, Walder, & Tramer, ), but there is one study focusing on technological areas (Kostoff et al., ). Duplicate publishing generates an array of issues, like the inflation of some of the indices used for merit evaluation, not to mention the risk of copyright disputes, because often some of the authors are omitted in the republication, or the copyright of the original work belongs to the publisher.…”