with Lenard, , 1996, The Hitler spirit and science [may 8, 1924], in K. Hentschel (ed.), Physics and national socialism, Basel, Birkhäuser, pp. 7-10.
, 1996a, Comment on W. Heisenberg's reply [February 28, 1936], in K. Hentschel (ed.), Physics and national socialism, Basel, Birkhäuser, pp. 124-127.
, 1996b, Organization of physical research [September 18, 1933], in K. Hentschel (ed.), Physics and national socialism, Basel, Birkhäuser, pp. 71-76.
, 1996c, Personal evaluations of Gustav Hertz and Richard Gans for the German university lecturers association [November 8, 1934], in K. Hentschel (ed.), Physics and national socialism, Basel, Birkhäuser, pp. 86-87.
, 1996d, Philipp Lenard, in K. Hentschel (ed.), Physics and national socialism, Basel, Birkhäuser, pp. 109-116.