Воронов Сергей Евгеньевич [Sergei Evgenyevich Voronov] (in Russian). Russian Figure Skating Federation. Archived from the original on 28 September 2014.
Воронов Сергей Евгеньевич [Sergei Evgenyevich Voronov] (in Russian). Russian Figure Skating Federation. Archived from the original on 28 September 2014.