[1] E. R., Berlekamp, J. H., Conway, and R. K., Guy, Winning Ways, vol. 2, Games in Particular, Academic Press, New York, 1982.Google Scholar

[2] al-Bīrūnī(= Abū-Rai?ān MuḤammad ibn ‘Aḥmad al-Bīrūnī), Al-Āthār al- Bāqiyah ‘an al-Qurūn al-Khāliyah, 1000. Translated and annotated by C. E., Sachau as The Chronology of Ancient Nations, William ḤAllen and Co., London, 1879; reprinted by Hijra International Publishers, Lahore, Pakistan, 1983.Google Scholar

[3] ḤY., Bornstein, MaḤloket Rav Sa'adyah Ga'on u-Ven Me'ir bi-Kevi'at Shenot 4672-4674 (= The Dispute Between Sa'adia Gaon and Ben-Meir Regarding the Character of Years 4672-4674), Warsaw, 1904.Google Scholar

[4] S. B., Burnaby, Elements of the Jewish and Muhammadan Calendars, with Rules and Tables and Explanatory Notes on the Julian and Gregorian Calendars, George Bell and Sons, London, 1901.Google Scholar

[5] N., Bushwick, Understanding the Jewish Calendar, Moznaim Publishing Corp., New York, 1989.Google Scholar

[6] E., Carlebach, Palaces of Time: Jewish Calendar and Culture in Early Modern Europe, Belknap Press of Harvard University Press, Cambridge, MA, 2011.Google Scholar

[7] W. M., Feldman, Rabbinical Mathematics and Astronomy, M. L., Cailingold, London, 1931; 3rd, corrected, edn., Sepher-Hermon Press, New York, 1978.Google Scholar

[8] M., Friedländer, “Calendar,” in The Jewish Encyclopedia, I., Singer, ed., Funk and Wagnalls, New York, 1906.Google Scholar

[9] C. F., Gauss, “Berechnung des jüdischen Osterfestes,” Monatliche Correspondenz zur Beförderung der Erd- und Himmels-Kunde, Herausgegeben vom Freiherrn von Zach (May 1802). Reprinted in Gauss's Werke, Herausgegeben von der Königlichen Gesellschaft der Wissenschaften, Göttingen, vol. 6, pp. 80-81, 1874.Google Scholar

[10] N., Golb, “Ben-Meir, Aaron,” in Encyclopædia Judaica, C., Roth, ed., vol. 4, Macmillan, New York, 1971. Translated from Encyclopædia Hebraica, Jerusalem, 1960.Google Scholar

[11] I., Israeli, Yesod Olam, 1310. Published as Liber Jesod Olam seu FundamentumMundi: Opus Astronomicum Celeberrimum, ex codice manuscripto denuo ediderunt, rextum emendarunt, notas adjecerunt, nec non versionem epiromariam vernacuam addendam curaverunt, B., Goldberg & L., Rosenkranz, Berolini (Berlin), 1846/1848.Google Scholar

[12] M. M., Kasher, Appendix to “Exodus,” Torah Shelemah (= Complete Torah): Talmudic-Midrashic Encyclopedia of the Pentateuch, vol. 13, American Biblical Encyclopedia Society, New York, 1949.

[13] al-Khowārizmī(= Abu Ja‘far Mohammed ibn Mūsā al-Khowārizmī), Fi istikhraj ta'rikh al-yahud. Translated by T., Langermann, Assufoth, Jerusalem, pp. 159-168, 1987.

[14] L., Levi, Jewish Chrononomy: The Calendar and Times of Day in Jewish Law, Gur Aryeh Institute for Advanced Jewish Scholarship, Brooklyn, NY, 1967. Revised edition published under the title Halachic Times for Home and Travel, Rubin Mass, Ltd., Jerusalem, 1992; expanded 3rd edn., 2000.Google Scholar

[15] Maimonides (= Moshe ben Maimon), Mishneh Torah: Sefer Zemanim-HilḤot Kiddush HaḤodesh, 1178. Translated by S., Gandz (with commentary by J., Obermann and O., Neugebauer), as Code of Maimonides, Book Three, Treatise Eight, Sanctification of the New Moon, Yale Judaica Series, vol. XI, Yale University Press, New Haven, CT, 1956. Addenda and corrigenda by E. J., Wiesenberg appear at the end of Code of Maimonides, Book Three, The Book of Seasons, translated by S., Gandz and H., Klein, Yale Judaica Series, vol. XIV, Yale University Press, New Haven, CT, 1961.Google Scholar

[16] O., Neugebauer, “The origin of ‘System B’ of Babylonian astronomy,” Centaurus, vol. 14, pp. 209-214, 1968.

[17] S. A., Pozna´nski, “Calendar (Jewish),” in Encyclopædia of Religion and Ethics, J., Hastings, edn., vol. III, pp. 117-124, Charles Scribner's Sons, New York, 1911.Google Scholar

[18] L. A., Resnikoff, “Jewish Calendar Calculations,” Scripta Mathematica, vol. 9, pp. 191-195, 274-277, 1943.Google Scholar

[19] Savasorda (= Abraham barḤiyya al-Bargeloní), Sefer ha-‘Ibbūr, 1122. Edited and printed by H., Filipowski, Longman, Brown, Green, and Longmans, London, 1851.Google Scholar

[20] ḤS., Slonimski, Yesōde ha-‘Ibbūr (= Basic Intercalation), ḤN., Schriftgisser, Warsaw, 1852. Second edn., I., Bakst, Zitomir, 1865.Google Scholar

[21] N., Slonimski, “My Grandfather Invented the Telegraph,” Commentary, vol. 63, no. 1, pp. 56-60, 1977.Google Scholar

[22] A., Spier, The Comprehensive Hebrew Calendar: Its Structure, History, and One Hundred Years of Corresponding Dates: 5660-5760, 1900-2000, Behrman House, New York, 1952. Revised 2nd edition published with the new subtitle Up to the Twenty-Second Century 5703-5860, 1943-2100, Feldheim Publishers, New York, 1981. Revised 3rd edition published with the new subtitle Twentieth to Twenty-Second Centuries, 5660-5860, 1900-2100, Feldheim Publishers, New York, 1986.Google Scholar

[23] S., Stern, Calendar and Community: A History of the Jewish Calendar, 2nd Century BCE to 10th Century CE, Oxford University Press, Oxford, 2001.Google Scholar

[24] E., J.Wiesenberg, “Calendar,” in Encyclopædia Judaica, C., Roth, ed., Macmillan, New York, 1971.Google Scholar