Serbian Works:

Marina Abramovic [Serbian, born 1946] and Ulay [German, born 1943]
The Great Wall Walk
1988

Marina Abramovic [Serbian, born 1946] and Ulay [German, born 1943]
Imponderabilia
1977

Marina Abramovic [Serbian, born 1946] and Ulay [German, born 1943]
Relation to Time
1977