Citation patterns between impact-factor and questionable journals. - Emanuel Kulczycki; Marek Holowiecki; Zehra Taskin; Franciszek Krawczyk (Scientometrics, 2021)

Questionable conferences and presenters from top-ranked universities. - Emanuel Kulczycki; Marek Holowiecki; Zehra Taskin; Güleda Dogan (J. Inf. Sci., 2024)