What identifies a case in this area?
Authorship of research results is generally a verifiable question of fact. If there is any question as to whether research results reported in a submitted article are original to the purported author or authors, you should make inquiries of the authors and/or their institutions. You, as the editor, are well positioned to know what research is being carried out at any particular time, at any particular place, and by whom. This knowledge should assist you in directing inquiries to the appropriate individuals and institutions to verify whether a research claim is genuine. In addition, you may want to seek guidance from other specialists in the field of research.