[886] Recherches sur la méthode de graeffe et les zéros des polynomes et des séries de laurent

[887] On the geometrical moments of skew-regular simplices in hyperspherical space, with some applications in geometry and mathematical statistics

[888] The$D$-Neumann problem

[889] On a theorem of Paley and the Littlewood conjecture

[890] A proof of a conjecture of Loewner and of the conjecture of caratheodory on umbilic points