Peters, C. A. F. (1842). Numerus constans nutationis ex ascensionibus rectis stellae polaris in specula Dorpatensi annis 1822 ad 1838 observatis deductus: Adjecta est disquisitio theoretica de formula nutationis.
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Tohutoru Kātū Chicago (17th ed.)
Peters, Christian August Friedrich. Numerus Constans Nutationis Ex Ascensionibus Rectis Stellae Polaris in Specula Dorpatensi Annis 1822 Ad 1838 Observatis Deductus: Adjecta Est Disquisitio Theoretica De Formula Nutationis. Petropoli, 1842.
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Tohutoro MLA (9th ed.)
Peters, Christian August Friedrich. Numerus Constans Nutationis Ex Ascensionibus Rectis Stellae Polaris in Specula Dorpatensi Annis 1822 Ad 1838 Observatis Deductus: Adjecta Est Disquisitio Theoretica De Formula Nutationis. 1842.
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