KLAS, Jakub, KLUZ, Natalia and PIWOWAR, Klaudia. Xylometazoline and oxymetazoline - unusual effects of everyday drugs (literature review). Journal of Education, Health and Sport. Online. 18 September 2021. Vol. 11, no. 9, pp. 272-281. [Accessed 1 July 2025]. DOI 10.12775/JEHS.2021.11.09.033.