Epiciclo (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Epiciclo" in Portuguese language version.

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"The popular belief that Copernicus's heliocentric system constitutes a significant simplification of the Ptolemaic system is obviously wrong ... [T]he Copernican models themselves require about twice as many circles as the Ptolemaic models and are far less elegant and adaptable." Neugebauer, Otto (1969). The Exact Sciences in Antiquity 2 ed. [S.l.]: Dover Publications. ISBN 978-0-486-22332-2 , p. 204. This is an extreme estimate in favor of Ptolemy.

Mosshammer, Alden A. (1981). «Thales' Eclipse». Transactions of the American Philological Association. 111: 145–155. ISSN 0360-5949. JSTOR 284125. doi:10.2307/284125
Olmstead, A. T. (1938). «Babylonian Astronomy: Historical Sketch». The American Journal of Semitic Languages and Literatures. 55 (2): 113–129. ISSN 1062-0516. JSTOR 3088090. doi:10.1086/amerjsemilanglit.55.2.3088090
Palter, Robert (1970). «Approach to the History of Astronomy». Studies in the History and Philosophy of Science. 1: 94. doi:10.1016/0039-3681(70)90001-4
Goldstein, Bernard R. (1972). «Theory and Observation in Medieval Astronomy». Isis. 63 (1): 39–47 [40–41]. doi:10.1086/350839

Mosshammer, Alden A. (1981). «Thales' Eclipse». Transactions of the American Philological Association. 111: 145–155. ISSN 0360-5949. JSTOR 284125. doi:10.2307/284125
Olmstead, A. T. (1938). «Babylonian Astronomy: Historical Sketch». The American Journal of Semitic Languages and Literatures. 55 (2): 113–129. ISSN 1062-0516. JSTOR 3088090. doi:10.1086/amerjsemilanglit.55.2.3088090

Mosshammer, Alden A. (1981). «Thales' Eclipse». Transactions of the American Philological Association. 111: 145–155. ISSN 0360-5949. JSTOR 284125. doi:10.2307/284125
Olmstead, A. T. (1938). «Babylonian Astronomy: Historical Sketch». The American Journal of Semitic Languages and Literatures. 55 (2): 113–129. ISSN 1062-0516. JSTOR 3088090. doi:10.1086/amerjsemilanglit.55.2.3088090
Diogenes Laertius (2013). The lives and opinions of eminent philosophers. [S.l.: s.n.] ISBN 978-1-230-21699-7. OCLC 881385989
Pedersen, Olaf (1993). Early physics and astronomy: a historical introduction Rev. ed. Cambridge, UK: Cambridge University Press. ISBN 0-521-40340-5. OCLC 24173447
Evans, James (1998). The history and practice of ancient astronomy. New York: Oxford University Press. ISBN 978-0-19-987445-3. OCLC 729872798