 Representatives of the Catholic Church are at times required to use the term "Roman Catholic Church" in certain dialogues, especially in the ecumenical milieu, since some other Christians consider their own churches to also be authentically Catholic.In the 21st century, the three terms – "Catholic Church", "Roman Catholic Church" and "Holy Roman Catholic Church" – continue to appear in various books and other publications.Scholarly debate on the proper form of reference to the Catholic Church within specific contexts continues.