Analysis of information sources in references of the Wikipedia article "Akhtala Monastery" in English language version.
p.114: In the first chapter historical evidence, epigraphic monuments and colophons were used to reconstruct the history of Akhtaia, a monastery transferred from the Monophysites to the Chalcedonians at the turn of the 13th century. In so doing the cultural environment in which the murals arose was more clearly elucidated. Particular attention was paid to the colophons of Symeon Plindzahanketsi: these writings by a monk of Akhtaia from the first half of 13th century revealed the worldview of the Armenian-Chalcedonians. For the first time a portrait was drawn of Ivane Mkhargrdzeli, the patron of the paintings, whose own historical destiny did much to determine the distinctive features of the frescoes. Finally, the juxtaposition of direct and indirect evidence proved that the paintings were executed between 1205 and 1216. This precise dating provides a firm point of departure for the study of other artistic phenomena of the period. (...) p.116 These findings confirm the importance of the Akhtaia murafs for the history of Byzantine, Armenian and Georgian art. Taken as a whole, the murals cannot be attributed to any single artistic tradition. They can only be correctly understood as a monument of Armenian-Chalcedonian art that achieved an original blend of elements drawn from Armenian, Georgian and Byzantine culture.
