http://vak.rutgers.edu/Napravlenie_trudov/TPP/040_220%20%D0%90%D1%80%D0%BC%D0%B0%D0%BD%D0%B4%20%D0%9D.%D0%90.%20%D0%92.%D0%90.%20%D0%9A%D0%BE%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%20%E2%80%94%20%D1%83%D1%87%D0%B5%D0%BD%D1%8B%D0%B8%CC%86,%20%D1%80%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D0%B5%D0%BB%D1%8C,%20%D1%87%D0%B5%D0%BB%D0%BE%D0%B2%D0%B5%D0%BA.pdf