Marciniak, Aleksandra, and Grażyna Mielnik-Niedzielska. “Smell Dysfunction from Symptoms to Diagnosis – Recent Methods of Olfactory Function Assessment”. Journal of Education, Health and Sport, vol. 9, no. 2, Feb. 2019, pp. 235-42, https://apcz.umk.pl/JEHS/article/view/6588.