Popa, Diana Ioana, Claudia Lenuța Rus, and Cătălina Oțoiu. 2025. “Leaders’ Dark Tetrad and Their Effectiveness: An Analysis of the Curvilinear Relationships Mediated by Team members’ Knowledge-Sharing Behaviors”. Psihologia Resurselor Umane 23 (2). https://doi.org/10.24837/pru.v23i2.601.