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References
- ↑ "Find My Past" . Retrieved 12 August 2016.
- 1 2 3 4 Your Computer, ed. (July 1982). "The Engineer Behind The Spectrum". Archived from the original on 16 March 2012. Retrieved 14 May 2011.
- ↑ Sinclair User, ed. (July 1982). "Secret plans laid by new company". Archived from the original on 16 May 2011. Retrieved 14 May 2011.
- ↑ Popular Computing Weekly, ed. (August 1982). "Spectrum team deal their Ace" . Retrieved 14 May 2011.
- ↑ "An Interview with ZX Spectrum Designer Richard Altwasser". October 2018.
- ↑ "Jupiter Ace Resource Site - Buyers Guide Home Computing Weekly November 1983".
- ↑ Popular Computing Weekly, ed. (3 November 1983). "Jupiter hits the dust" . Retrieved 14 May 2011.
