Jagnow, René, cEdmund Husserl on the Applicability of Formal Geometryd,  in: Emily Carsons et al. (eds.), Intuition and the Axiomatic Method, Springer: Dordrecht 2006 (Western Ontario Series in Philosophy of Science; 70), 67385
V. Peckhaus, Zentralblatt für Mathematik und ihre Grenzgebiete  (2009).