1. Stillman Drake, “Galileo’s Pre-Paduan Writings: Years, Sources, Motivations”, in Studies in History and Philosophy of Science, 17 (1986) 429–448, henceforth cited as “Pre-Paduan Writings”.
2. William A. Wallace, “Galileo’s Sources: Manuscripts or Printed Works?” in Print and Culture in the Renaissance, S. Vagonheim and G. Tyson, Newark, Del.: The University of Delaware Press, 1986; pp. 45–54; “The Early Jesuits and the Heritage of Domingo de Soto”, in History and Technology, 4 (1987) 301–320; and “Science and Philosophy at the Collegio Romano in the Time of Benedetti”, Atti del Convegno Internazionale di Studio Giovan Battista Benedetti e il Suo Tempo, Venice: Istituto Veneto di Scienze, Lettere ed Arti, 1987; pp. 113–126.
3. Crombie, A. C., “Sources of Galileo’s Early Natural Philosophy”, in Reason, Experiment, and Mysticism in the Scientific Revolution, eds. R. M. Righini Bonelli and W. R. Shea, ( New York: Science History Publications, 1975 ), p. 305.