"Perfekter Rückrundenauftakt". Alemannia Aachen (in German). 4 February 2008. Archived from the original on 20 January 2021. Retrieved 23 January 2021.
"Jerome Polenz wieder spielberechtigt" [Jerome Polenz again eligible to play]. 1. FC Union Berlin (in German). 26 September 2011. Archived from the original on 29 September 2011. Retrieved 15 June 2013.
"Perfekter Rückrundenauftakt". Alemannia Aachen (in German). 4 February 2008. Archived from the original on 20 January 2021. Retrieved 23 January 2021.
"Jerome Polenz wieder spielberechtigt" [Jerome Polenz again eligible to play]. 1. FC Union Berlin (in German). 26 September 2011. Archived from the original on 29 September 2011. Retrieved 15 June 2013.