1. Elektrodynamik und Wellenmechanik vom Standpunkt des Korrespondenzprinzips
2. A summary of the results arrived at in this paper has been given in a letter toNatureJuly 1927 30unfortunately without knowledge of a paper by G. Wentzel,Zeits. f. Phys.xliii. p. 1 (1927), who has used a dispersion formula for short waves to investigate the Compton effect of bound electrons.
3. Elektrodynamik und Wellenmechanik vom Standpunkt des Korrespondenzprinzips
4. Der Comptoneffekt nach der Schr�dingerschen Theorie