Pappus in the thirteenth century in the Latin West / Sabetai Unguru.
Abstract:
Refutes the view that Pappus of Alexandria's "Collectio mathematica" was not known during the Latin Middle Ages. Shows that Witelo, in his "Perspectiva" of the 1270s, gives evidence of having known at least parts of the "Collectio"
Archive for history of exact sciences Vol. 13 (1974), p. 307-324