HES: QUERY--Dr. Gerhard Tintner's Advisor?

[Sumaira Jafri]

Hi,
I am writing an article on Dr. Gerhard Tintner and his work. It is well known that he did his Ph.D. from University of Vienna in 1928 where he was a member of Von Mises seminars and also a student of Karl Menger. However, I could not find anywhere any reference of his advisor or his dissertation work. Could some one please let me know who was Dr. Tintner's advisor and the title of his dissertation. Any pointers towards his early work would also be appreciated.
Regards,

Sumaira Jafri