 Complete the following phrase:  Because of geographical proximity, minor rivalries exist with Trelleborgs FF and Landskrona BoIS, which are both also located in Scania. The main rivals of the club are Helsingborgs IF, IFK Göteborg and IFK Malmö. The rivalry between Malmö FF and Helsingborgs IF has existed since Malmö FF were promoted up to Allsvenskan in the 1930s, and is primarily geographic, since both teams are from Scania in southern Sweden. The rivalry with IFK Göteborg relates more to title clashes; the two are the most successful clubs in Swedish football history and the only two to have appeared in European cup finals, IFK Göteborg in the UEFA Cup in 1982 and 1987 and Malmö FF in the European Cup in 