Hansen, Jens Gjesse (30 June 2008). "Lars Olsens søn skifter til Randers" [Lars Olsen's son switches to Randers]. DR (in Danish). Retrieved 27 March 2019.
fcb-archiv.ch
Verein "Basler Fussballarchiv” (27 July 1994). "FC Basel - FC Lugano 0:1 (0:0)". Verein "Basler Fussballarchiv”. Retrieved 16 November 2021.
Verein "Basler Fussballarchiv” (20 November 1994). "FC Luzern - FC Basel 0:1 (0:0)". Verein "Basler Fussballarchiv”. Retrieved 16 November 2021.
Verein "Basler Fussballarchiv” (1997). "Lars Olsen - FCB statistic". Verein "Basler Fussballarchiv”. Retrieved 16 November 2021.