IVANKO, O. The man who overcame two epidemics (to the 160th anniversary of the birth of V.A. Haffkine). CHILD`S HEALTH, [S. l.], v. 15, n. 8, p. 573–576, 2021. DOI: 10.22141/2224-0551.15.8.2020.220354. Disponível em: https://childshealth.zaslavsky.com.ua/index.php/journal/article/view/1401. Acesso em: 10 aug. 2022.