http://www.turkiyesagligi.com/site_document/files/dosya/covid-19_pandemi_seyri_22_haziran_son_70591.pdf
http://www.akadhaber.com/yazarlar/prof.-dr.-turan-buzgan/corona-da-son-durum/151/ http://www.akadhaber.com/yazarlar/prof.-dr.-turan-buzgan/corona-da-son-durum/151/