Thus, while Reiss has not claimed absolute proof that Nussimbaum, rather than Ehrenfels or Chamanzaminli, is the primary author, he does cite documentary evidence showing that Nussimbaum had a need in 1937 to "Aryanize" his publications in order to continue to generate income from them, was receiving income from checks written to the name of Kurban Said, made several documented references identifying himself as Kurban Said, and continued to use the pseudonym on his final, unpublished manuscript "Der Mann der Nichts von der Liebe Verstand".