What Are the Blacklisted Journals? Invalid journals are journals that have an online site and a specific ISSN number. Blacklisted journals use online site and an ISSN number to publish articles. Currently, these journals becomes invalid for reasons such as: Printing too many articles in one issue Short-term refereeing Publishing articles unrelated to the scope Read more about What Are the Blacklisted Journals and How Can You Recognize Them?[…]