1. T. O. M. Reel 32, Bag 2078, Section G. Translated from the German by Charles A. Meyer and Co., Inc.
2. P. B. 70248, Frames 2351–2388, Office of Technical Services (in German).
3. Farben, I. G.: P. B. 25610, Frames 4658–5661, (Patent Application, dated July 16, 1941).