29 years, Russia

36 years, Kazakhstan

51 years, Khan′ya (Kaniya), Greece

31 years, Дубна, Russia

59 years, Tashkent, Uzbekistan

59 years, Moscow, Russia

42 years, Москва - Киев, Russia

31 years, Дубна, Russia

30 years, Ukraine

56 years, Toronto, Canada

47 years, Russia

49 years, Dnipropetrovsk, Ukraine

53 years, Russia

26 years, Хвалынск, Russia

19 years, Birobidzhan, Russia

53 years, Saint Petersburg, Russia

44 years, Saint Petersburg, Russia

27 years, Moscow, Russia

34 years, Russia

39 years, Russia