Kalendář pro počítání čtyřiceti devíti dnů mezi svátky Pesach a Šavuot.
Counting the Omer: The Basics of the Jewish Ritual
Bilski, Emily D., ed. Objects of the Spirit: Ritual and the Art of Tobi Kahn, Hudson Hills Press, Manchester, Vermont and New York, 2004, pp. 48-50.
Carlebach, Elisheva. Palaces of Time: Jewish Calendar and Culture in Early Modern Europe. Cambridge, Massachusetts and London: Harvard University Press, 2011.
Kedar, Karyn D. Omer: A Counting. Central Conference of American Rabbis, New York, 2014.
Wahl, Jean-Jacques. “Le calendrier de l’Omer: un objet méconnu,” Montevideo 31 (March 2012), 22-23.
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