Ancient sources of the medieval tradition of mechanics :
	Greek, Arabic, and Latin studies of the balance
/ Wilbur Richard Knorr.
Firenze : Istituto e museo di storia della scienza, 1982.

The ancient tradition of geometric problems
/ Wilbur Knorr.
Cambridge, MA : Birkhauser Boston, 1985-

The evolution of the Euclidean elements :
	a study of the theory of incommensurable magnitudes
	and its significance for early Greek geometry /
Wilbur Richard Knorr.
Dordrecht, Holland ; Boston : D. Reidel Pub. Co., [1975].

Textual studies in ancient and medieval geometry
/ Wilbur Richard Knorr.  
Boston : Birkhauser, 1989.