Klemperer, W. B. Some Properties of Rosette Configurations of Gravitating Bodies in Homographic Equilibrium (англ.) // Astronomical Journal : journal. — 1962. — April (vol. 67, no. 3). — P. 162—167. — doi:10.1086/108686. — Bibcode: 1962AJ.....67..162K.
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Klemperer, W. B. Some Properties of Rosette Configurations of Gravitating Bodies in Homographic Equilibrium (англ.) // Astronomical Journal : journal. — 1962. — April (vol. 67, no. 3). — P. 162—167. — doi:10.1086/108686. — Bibcode: 1962AJ.....67..162K.