On the derivatives of the mean values of integral functions represented by Dirichlet series
On axially symmetric superposable flows of the type curl $q_1=\lambda_2q_2$, curl $q_2=\lambda_1q_1$
Über die Veranderung der Fackelflachen in Sonnen-Aktivitatszentren
Steady flows of two conducting incompressible and immiscible fluids
On convex functions and their applications to entire functions
The perihelion motion and deflection of light
Abbildung durch zwei Netze mit einer gemeinsamen Leitgeraden
Obsrvations des taches solaires en 1962
Congruences of curves through points of a subspace and hypersurface of a Finsler space