Neugebauer, Otto E. (1945). «The History of Ancient Astronomy Problems and Methods». Journal of Near Eastern Studies4 (1): 1-38. S2CID162347339. doi:10.1086/370729.
Neugebauer, Otto E. (1945). «The History of Ancient Astronomy Problems and Methods». Journal of Near Eastern Studies4 (1): 1-38. S2CID162347339. doi:10.1086/370729.