Georgi Petkov – Introduction to the Translation of Alanus De Insulis, Summa De Arte Praedicatoria, PL 210, 0109 – 0198A September 3, 2015July 2015 Issue 18admin Rhetoric and Communications E-journal, Issue 18, July 2015, rhetoric.bg/, journal.rhetoric.bg, ISSN 1314-4464 Read the original of the text (in Bulgarian)