Pop, Teresa, Magdalena Kotowicz, Katarzyna Łach-Pop, Anna Czyrek, Anna Potera, Wojciech Rusek, and Andrzej Maciejczak. 2009. “Sensitivity to Galvanic Current in Patients Receiving Treatment Due to Painful Ailments in the Spine and Peripheral Joints”. European Journal of Clinical and Experimental Medicine 7 (2):180–185. https://journals.ur.edu.pl/ejcem/article/view/13187.