Otinashvili, Nikoloz. “The Problems of the Periods of the Georgian Literary Language and ‘The Knight in the Panther’s Skin’”. Yearbook of Kutaisi Ilia Chavchavadze Public Library , vol. 4, Dec. 2021, pp. 215-20, https://yearbook.openjournals.ge/index.php/kly/article/view/3206.