Galilei, G. (1950). Discourses and mathematical demonstrations concerning two new sciences: The first day, and parts of the second day, the third day and the fourth day. University of Chicago Press.

Galilei, Galileo. Discourses and Mathematical Demonstrations Concerning Two New Sciences: The First Day, and Parts of the Second Day, the Third Day and the Fourth Day. Chicago: University of Chicago Press, 1950.

Galilei, Galileo. Discourses and Mathematical Demonstrations Concerning Two New Sciences: The First Day, and Parts of the Second Day, the Third Day and the Fourth Day. University of Chicago Press, 1950.