Ermakova, Olga. “State Policy in the Recruitment of Foreign Specialists IN Ural Factories (the 1st Half of the 19th Century)”. Quaestio Rossica, no. 3 (1): 242 - 252. Accessed August 1, 2021. https://qr.urfu.ru/ojs/index.php/qr/article/view/072.