08 - 12 December, 1980

11 - 15 Mayo, 1981

13 - 23 September, 1981

24 September, 1981

26 - 29 April, 1982

06 - 09 December, 1982

02 - 05 Mayo, 1983

02 - 06 October, 1983

12 October, 1983