1. Pierre Duhem, To Save the Phenomena (University of Chicago Press, 1969; first published in French, 1908), pp. 68f.
2. For two rather different accounts see Jerome J. Langford, Galileo, Science, and the Church ( Ann Arbor: University of Michigan Press, 1971 )
3. Giorgio de Santillana, The Crime of Galileo (University of Chicago Press, 1955).
4. Pierre Duhem, The Aim and Structure of Physical Theory (New York: Atheneum Press, 1962; first published in French, 1914).
5. Stanley L. Jaki, `Introductory Essay’ in To Save the Phenomena, p. xiv. Cf. Jaki, The Relevance of Physics (University of Chicago Press, 1966 ), pp. 550f.