The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "alter" appeared
2004-06-10 : On the primacy of price stability2003-02-28 : Considerations on monetary policy strategies for accession countries
2001-06-28 : Liberaler Kapitalismus und Soziale Marktwirtschaft
2000-03-17 : Walter Eucken: vom Primat der Währungspolitik