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Lara, Patricia (2012). On the structural law of exoplanetary systems. ICNAAM 2012: International Conference of Numerical Analysis and Applied Mathematics. AIP Conference Proceedings. Vol. 1479. pp. 2356–2359. Bibcode:2012AIPC.1479.2356L. doi:10.1063/1.4756667.
Cohen, Howard L. (May 1996). "The Titius-Bode relation revisited". FirstLight (monthly newsletter article). Gainesville, FL: Alachua Astronomy Club. Archived from the original on 28 September 2007. Retrieved 24 February 2008 – via Florida Stars (floridastars.org).