"DAC Top 50 Albums 1999". Trendcharts oHG. AMC Alster Musik Consulting GmbH. 2000. Archived from the original on 18 April 2001. Retrieved 20 January 2022.
"DAC Top 50 Albums 2005". Trendcharts oHG. AMC Alster Musik Consulting GmbH. 2006. Archived from the original on 23 April 2008. Retrieved 20 January 2022.
"DAC Top 100 Singles 2005". Trendcharts oHG. AMC Alster Musik Consulting GmbH. 2006. Archived from the original on 23 April 2008. Retrieved 20 January 2022.
"DAC Top 50 Albums 1999". Trendcharts oHG. AMC Alster Musik Consulting GmbH. 2000. Archived from the original on 18 April 2001. Retrieved 20 January 2022.
"DAC Top 50 Albums 2005". Trendcharts oHG. AMC Alster Musik Consulting GmbH. 2006. Archived from the original on 23 April 2008. Retrieved 20 January 2022.
"DAC Top 100 Singles 2005". Trendcharts oHG. AMC Alster Musik Consulting GmbH. 2006. Archived from the original on 23 April 2008. Retrieved 20 January 2022.