Title: Papstvoto I bŭlgarite prez Srednovekovieto, IX-XV v. /
Authors: Gi︠u︡zelev, Vasil
Publisher: Fondat͡sii͡a Bŭlgarsko istorichesko nasledstvo,
Year: 2009
Subjects: Catholic Church Foreign relations Bulgaria.; East and West History Sources.; Bulgaria Church history Sources.; Bulgaria Foreign relations Catholic Church.