Виноградник, Т. І. “FAMILY TALENT OF POKUTTYA (TO 120 ANNIVERSARY OF IVAN FEDORAK’S BIRTHDAY)”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Idea, no. 3(11), June 2019, pp. 122-31, https://pvntsh.nung.edu.ua/index.php/idea/article/view/733.