https://www.academia.edu/33703920/%D0%A2%D0%B5%D0%BE%D1%80%D0%B8%D1%8F_%D1%86%D0%B8%D0%B2%D0%B8%D0%BB%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D0%B9_%D0%BE%D1%82_%D0%B0%D0%BD%D1%82%D0%B8%D1%87%D0%BD%D0%BE%D1%81%D1%82%D0%B8_%D0%B4%D0%BE_%D0%BA%D0%BE%D0%BD%D1%86%D0%B0_XIX-%D0%B3%D0%BE_%D0%B2%D0%B5%D0%BA%D0%B0
