Woźniak-Kosek , A., J. Kosek, and J. Mierzejewski. “Could Influenza Be a Possible Biological Warfare Agent? Part II”. Alergoprofil, Vol. 10, no. 3, Dec. 2013, pp. 16-24, https://www.journalsmededu.pl/index.php/alergoprofil/article/view/808.