Israel and the Diaspora in Jewish Law(1997), Aging and the Aged in Jewish Law(1998), Die Lehren des Judentums(1999).

Peter Knobel is rabbi of Beth Emet, Evanston , Illinois . Chair of the Liturgy Committee of the Central Conference of American Rabbis; the author of numerous scholarly articles; he is editor of Gates of the Season(1983), Duties of the Soul, The Role of Commandments in Liberal Judaism(1999), and of the new American Reform prayer book..

Daniel Schiff is Rabbi of Temple B’nai Israel , McKeesport, Pennsylvania , Community Scholar of the Jewish Education Institute of Pittsburgh . Member of the Responsa Committee of the Central Conference of American Rabbis.

Ariel Stone is Associate Rabbi of Congregation Beth Israel of Portland , Oregon . While serving the Progressive congregation in Kiev ,

she also led services at the city’s Karaite synagogue. Her research has included the Karaites , heresy in Talmudic Judaism, and bioethics.

Moshe Zemer is Director of the Freehof Institute of Progressive Halakhah: a founder of Progressive Judaism in Israel ; founding rabbi of the Kedem Synagogue-Bet Daniel, Tel Aviv . Av Bet Din of the Israel Council of Progressive Rabbis, Senior Lecturer in Rabbinics at the Hebrew Union College , Jerusalem . Contributor of numerous articles on halakhah in the Israeli press and scientific journals; he is the author of The Sane Halakhah[Hebrew ](1993), with English and German translations in preparation.