Mathematicians Plenary and Invited Speakers#1932, Zürich and [1] archive copy at the Wayback Machine for the list of speakers, and [2] and p.35-44 (27-36) in
Frau Graustein 153. Herr Silvermann 183. Prof. Straszewicz 212. Prof. Carathéodory 26. Herr Perna 58. Prof. Bortolotti 91. Prof. Tschebotaröw 123. Prof