J. Gałaszkiewicz, K. Rębisz, J. Morylowska-Topolska, H. Karakuła-Juchnowicz, and G. Kozak, “Clozapine-resistant schizophrenia – non pharmacological augmentation methods”, Curr Probl Psychiatry, vol. 18, no. 4, pp. 279–291, Dec. 2017, doi: 10.1515/cpp-2017-0021.