^Michael A. Meyer, The Origins of the Modern Jew: Jewish Identity and European, p. 212, 1979: "Especially Bresselau, and Seckel Isaac Frankel, Schutzschrift des zu Hamburg erschienenen Israelitischen Gebetbuchs."
^Michael A. Meyer, Response to Modernity: A History of the Reform Movement in Judaism, 1995, p. 54: "Two members of the directorate, Seckel Isaac Frankel (1765-1835) and Meyer Israel Bresselau (1785–1839), devoted themselves to the cause of the new association with particular intensity."
