This article incorporates text from a publication now in the public domain: Singer, Isidore; et al., eds. (1901–1906). "Smaller Midrashim". The Jewish Encyclopedia. New York: Funk & Wagnalls. Its bibliography:

• Zunz, G. V. p. 142;
• A. Jellinek, B. H. 2:23 et seq.; 5:41; 6:17 et seq.;
• Benjacob, Oẓar ha-Sefarim, p. 299.
• On the problem of the synchronism of the ten martyrs see Heinrich Grätz, Gesch. iv. 175 et seq., and Monatsschrift, i. 314 et seq.
• A German translation by P. Möbius appeared in 1845.