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

Are papers published in predatory journals worthless? A geopolitical dimension revealed by content-based analysis of citations. - Zehra Taskin; Franciszek Krawczyk; Emanuel Kulczycki (Quant. Sci. Stud., 2023)