https://uahistory.co/pidruchniki/gydima-national-defense-bases-medical-knowledge-11-class-2019/
https://www.dsns.gov.ua/files/2020/5/19/112/%D0%9F%D0%9E%D0%A1%D0%86%D0%91%D0%9D%D0%98%D0%9A.pdf
https://ua1lib.org/ireader/3349634
https://zahystblog.files.wordpress.com/2015/12/d0bfd0bed181id0b1d0bdd0b8d0ba.pdf
