52 years, Moscow, Russia

28 years, Kazan, Russia

30 years, Irkutsk, Russia

44 years, Kemerovo, Russia

41 years, Moscow, Russia

32 years, Nizhny Novgorod, Russia

38 years, Russia

39 years, Russia

38 years, Poland

22 years, Russia

20 years, Russia

28 years, Russia

27 years, Russia

Kazakhstan

25 years, Kazakhstan

20 years, Russia

28 years, Russia

50 years, Dubna, Russia

17 years, Russia

38 years, Russia