Only 7 of them are fully certified international FIFA referees.

He has been a FIFA listed international referee since 2004.

He is known to have served as a FIFA referee during the period from 1987 to 1992.

From 1994 until 2004 he was an international FIFA referee.

In 2003, he was appointed to the list of FIFA referees.

He also served as a FIFA referee from 1998 to 2004.

He is known to have worked as a FIFA referee during the period from 1979 to 1988.

He has been a FIFA international referee since 2001.

In 2001 he was appointed as an official FIFA referee.

Four years after that he was appointed a FIFA referee.