écliptique

[1969] Ptolemy's Determination of the Obliquity of the Ecliptic ; John P. Britton ; Centaurus 14 (1969) p. 29 [lien]
[1983] Eratosthenes' Ratio for the Obliquity of the Ecliptic ; David H. Fowler ; Dennis Rawlins ; ISIS 74 (1983) p. 556 [lien]
[1993] Le mouvement apparent du Soleil parmi les constellations ; J.-P. Rosenstiehl ; BUP 759 (dec 1993) p. 1543 [lien]
[2002] Eratosthenes, Hipparchus, and the obliquity of the ecliptic ; Alexander Jones ; Journal for the History of Astronomy 33 (2002) p. 15 [lien]