"Spinoza's Version of the Ontological Proof (in comparison with those of St. Anselm and Descartes)", in Barukh Shpinozah. Kovets ma´ amarim al mishnato [Baruch de Spinoza. A collection of papers on his Thought], eds Menahem Brinker, Marcelo Dascal, Dan Nesher, University Publishing Projects Ltd, Tel Aviv, 1979, p. 9-17. (hébreu, résumé en anglais).
"The ontological proof. Spinoza's version in comparison with those of St. Anselm and Descartes", in Spinoza : His Thought and Work. Entretiens in Jerusalem, 6-9 september 1977, eds. Nathan Rotenstreich and Norma Schneider, Israel Academy of Sciences and Humanities, Jerusalem, 1983, 101-109. (anglais).