Tevzadze, Gigi, Zaal Kikvidze, Davit Mikeladze, and Revaz Solomonia. “The Lonely Neanderthal: A Neurochemical Hypothesis for the Domestication of Animals and Plants”. KADMOS, no. 7 (1): 106-146. Accessed September 25, 2021. https://kadmos.iliauni.edu.ge/index.php/kadmos/article/view/219.