Ignacy Rożek, Wojciech Gąska, Izabela Lekan, Joanna Mazurek, Agnieszka Brzezińska, Weronika Tuszyńska, Alicja Sodolska, Michał Lenart, Barbara Madoń and Barbara Teresińska 2025. MODERN STRATEGIES FOR THE TREATMENT OF TREATMENT-RESISTANT DEPRESSION – A LITERATURE REVIEW. International Journal of Innovative Technologies in Social Science. 6, 3(47) (Sep. 2025). DOI:https://doi.org/10.31435/ijitss.3(47).2025.3822.