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stargazed.net
Eriksson, Cristoffer (5 November 2019). "Cream drummer Ginger Baker remembered". Stargazed Magazine. COUVERT i SVERIGE AB. Archived from the original on 7 August 2020. Retrieved 4 January 2020.
web.archive.org
von Trath, Fritz. "Nordic Authors: Jonas Hellborg". Runeberg.org. Lindköping University Sweden. Archived from the original on 21 December 2022. Retrieved 5 January 2020.
Astarita, Glenn. "Jonas Hellborg; Bass". AllMusic. Rhythm One Group. Archived from the original on 26 September 2019. Retrieved 4 January 2020.
Eriksson, Cristoffer (5 November 2019). "Cream drummer Ginger Baker remembered". Stargazed Magazine. COUVERT i SVERIGE AB. Archived from the original on 7 August 2020. Retrieved 4 January 2020.