Feldman 1967, pp. 113–37. Feldman, Seymour (1967). "Gersonides' Proofs for the Creation of the Universe". Proceedings of the American Academy for Jewish Research. 35: 113–37. doi:10.2307/3622478. JSTOR3622478.
Craig 1979. Craig, W. L. (1979). "Whitrow and Popper on the Impossibility of an Infinite Past". The British Journal for the Philosophy of Science. 30 (2): 165–70. doi:10.1093/bjps/30.2.165.
Feldman 1967. Feldman, Seymour (1967). "Gersonides' Proofs for the Creation of the Universe". Proceedings of the American Academy for Jewish Research. 35: 113–37. doi:10.2307/3622478. JSTOR3622478.
Davidson 1969. Davidson, H. A. (1969). "John Philoponus as a Source of Medieval Islamic and Jewish Proofs of Creation". Journal of the American Oriental Society. 89 (2): 357–91. doi:10.2307/596519. JSTOR596519.
Craig 1979, pp. 165–66. Craig, W. L. (1979). "Whitrow and Popper on the Impossibility of an Infinite Past". The British Journal for the Philosophy of Science. 30 (2): 165–70. doi:10.1093/bjps/30.2.165.
Feldman 1967, pp. 113–37. Feldman, Seymour (1967). "Gersonides' Proofs for the Creation of the Universe". Proceedings of the American Academy for Jewish Research. 35: 113–37. doi:10.2307/3622478. JSTOR3622478.
Feldman 1967. Feldman, Seymour (1967). "Gersonides' Proofs for the Creation of the Universe". Proceedings of the American Academy for Jewish Research. 35: 113–37. doi:10.2307/3622478. JSTOR3622478.
Davidson 1969. Davidson, H. A. (1969). "John Philoponus as a Source of Medieval Islamic and Jewish Proofs of Creation". Journal of the American Oriental Society. 89 (2): 357–91. doi:10.2307/596519. JSTOR596519.