Війтишин, В. “The Originality of the Ecumenical Teachings of John Paul II”. Good Parson: Scientific Bulletin of Ivano-Frankivsk Academy of John Chrysostom. Theology. Philosophy. History, no. 4, Jan. 2012, pp. 7-30, http://journal.ifaiz.edu.ua/index.php/gp/article/view/334.