Mircea Radu


, 2013a, 'Otto Hölder's 1892 "review of Robert Graßmann's 1891 theory of number". introductory note', Philosophia Scientiae 17 (1), 53-56.

, 2013b, 'Otto Hölder's interpretation of David Hilbert's axiomatic method', Philosophia Scientiae 17 (1), 117-129.

, 2005a, Did Hermann and Robert Graßmann contribute to the emergence of formal axiomatics?, in M. H. G. . Hoffmann, J. Lenhard & F. Seeger (eds.), Activity and sign, Dordrecht, Springer, pp. 263-274.