Complex sentence: He also refereed three European Championships in 1984 in 1988 including the final game between the USSR and The Netherlands and UEFA Champions League 1986 including also the final game between the FC Steaua Bucharest and FC Barcelona.
Split into simpler sentences: He also refereed three European Championships in 1984 in 1988, including the final game between the USSR and the Netherlands. In addition, he refereed in the European Cup 1985--86, including the final game between the FC Steaua Bucharest and FC Barcelona.