Mahmudova, Shafagat Jabrail. “Statistical Analysis of the Characteristic Features of Standard Image for Racial and Ethnic Identity of a Person”. European Journal of Applied Sciences 3, no. 3 (May 28, 2015): 1. Accessed February 25, 2021. https://journals.scholarpublishing.org/index.php/AIVP/article/view/1156.